Journal articles: 'Perchlorate coordination'

1

Avecilla, Fernando, David Esteban, Carlos Platas-Iglesias, Susana Fernández-Martínez, Andres De Blas, and Teresa Rodríguez-Blas. "A barium perchlorate complex with a lateral macrobicycle derived from 4,13-diaza-18-crown-6 containing a pyridine Schiff base spacer." Acta Crystallographica Section C Crystal Structure Communications 59, no. 11 (2003): m450—m451. http://dx.doi.org/10.1107/s0108270103016901.

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In the crystal structure of (perchlorato-κ2 O,O′))(28,31,36,39tetraoxa-1,9,17,25,42-pentaazapentacyclo[23.8.5.111,15.03,8.018,23]nonatriaconta-3,5,7,9,11,13,15,16,18,20,22-undecaene-κ8 N 1,N 9, N 17,N 42,O 28,O 31,O 36,O 39)barium(II) perchlorate, [Ba(ClO4)(C33H41N5O4)](ClO4), the BaII cation is situated in the macrobicyclic cavity, bound to only eight of the nine available donor atoms of the Schiff base macrobicyclic receptor. The pivotal N5 atom does not belong to the coordination sphere of the BaII ion, in spite of its endo conformation with the lone pair directed towards the inside of the cavity. The BaII ion completes its coordination core with two O atoms of one bidentate perchlorate group.

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2

Hennings, Erik, Horst Schmidt, and Wolfgang Voigt. "Crystal structures of Sr(ClO4)2·3H2O, Sr(ClO4)2·4H2O and Sr(ClO4)2·9H2O." Acta Crystallographica Section E Structure Reports Online 70, no. 12 (2014): 510–14. http://dx.doi.org/10.1107/s1600536814024726.

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The title compounds, strontium perchlorate trihydrate {di-μ-aqua-aquadi-μ-perchlorato-strontium, [Sr(ClO4)2(H2O)3]n}, strontium perchlorate tetrahydrate {di-μ-aqua-bis(triaquadiperchloratostrontium), [Sr2(ClO4)4(H2O)8]} and strontium perchlorate nonahydrate {heptaaquadiperchloratostrontium dihydrate, [Sr(ClO4)2(H2O)7]·2H2O}, were crystallized at low temperatures according to the solid–liquid phase diagram. The structures of the tri- and tetrahydrate consist of Sr2+cations coordinated by five water molecules and four O atoms of four perchlorate tetrahedra in a distorted tricapped trigonal–prismatic coordination mode. The asymmetric unit of the trihydrate contains two formula units. Two [SrO9] polyhedra in the trihydrate are connected by sharing water molecules and thus forming chains parallel to [100]. In the tetrahydrate, dimers of two [SrO9] polyhedra connected by two sharing water molecules are formed. The structure of the nonahydrate contains one Sr2+cation coordinated by seven water molecules and by two O atoms of two perchlorate tetrahedra (point group symmetry ..m), forming a tricapped trigonal prism (point group symmetrym2m). The structure contains additional non-coordinating water molecules, which are located on twofold rotation axes. O—H...O hydrogen bonds between the water molecules as donor and ClO4tetrahedra and water molecules as acceptor groups lead to the formation of a three-dimensional network in each of the three structures.

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3

Nath, Babul Chandra, Sebastián Suarez, Fabio Doctorovich, Tapashi G. Roy, and Ricardo Baggio. "Two solvatomorphic forms of a copper complex formulated as Cu(L1)(ClO4)2·1.2H2O and Cu(L1)(ClO4)2, whereL1is 3,10-C-meso-3,5,7,7,10,12,14,14-octamethyl-1,4,8,11-tetraazacyclotetradecane." Acta Crystallographica Section C Crystal Structure Communications 69, no. 7 (2013): 689–95. http://dx.doi.org/10.1107/s0108270113013711.

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Two copper complex solvatomorphs, namely (3,10-C-meso-3,5,7,7,10,12,14,14-octamethyl-1,4,8,11-tetraazacyclotetradecane)bis(perchlorato-κO)copper(II) 1.2-hydrate, [Cu(ClO4)2(C18H40N4)]·1.2H2O, (I), and (3,10-C-meso-3,5,7,7,10,12,14,14-octamethyl-1,4,8,11-tetraazacyclotetradecane)bis(perchlorato-κO)copper(II), [Cu(ClO4)2(C18H40N4)], (II), are described and compared with each other and with a third, already reported, anhydrous diastereomer, denoted (III). Both compounds present very similar centrosymmetic coordination environments, with the CuIIcation lying on an inversion centre in a distorted 4+2 octahedral environment, defined by the macrocyclic N4group in the equatorial sites and two perchlorate groups intrans-axial positions [one of the perchlorate ligands in (I) is partially disordered]. The most significant difference in molecular shape is seen in the orientation of the perchlorate anions, and the influence of this on the intramolecular hydrogen bonding is discussed. The (partially) hydrated state of (I) favours the formation of chains along [011], while the anhydrous character of (II) and (III) promotes loosely bound structures with low packing indices.

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4

Yang, Guang, Elena V. Rybak-Akimova, and Charles Campana. "{1,1′-Bis[(pyridin-2-yl)methyl]-2,2′-bipiperidyl}(perchlorato)copper(II) perchlorate." Acta Crystallographica Section E Crystallographic Communications 73, no. 7 (2017): 1082–86. http://dx.doi.org/10.1107/s2056989017009410.

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The title complex, [CuII(ClO4)(mesoPYBP)](ClO4) {PYBP = 1,1′-bis[(pyridin-2-yl)methyl]-2,2′-bipiperidyl, C22H30N4}, was prepared and found to crystallize with two crystallographically independent complex salt moieties. The metal atoms of the cations adopt a pseudo-square-pyramidal coordination geometry, where the tetradentate aminopyridine ligands (PYBP) are wrapped around the Cu atoms in the equatorial plane. The Cu—O bonds involving an O atom of the coordinating perchlorate anion are approximately perpendicular to the plane. The two remaining non-coordinating perchlorate anions are involved in several C—H...O hydrogen bonds with the PYBP ligand and balance the total charge of the complex salt. The two crystallographically independent moieties are related to each otherviaa pseudo-translation along thea-axis direction. Exact translational symmetry is broken by (i) a difference in the conformation of one of the piperidine rings, featuring a chair conformation in one of the cations, and a sterically disfavored boat conformation in the other; and (ii) by modulation of the non-coordinating perchlorate anions.

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5

Wu, Yang, Wen-Zhen Wang, Rayyat Huseyn Ismayilov, Gene-Hsiang Lee, and Shie-Ming Peng. "A coordination polymer consisting of two different one-dimensional copper(II) chains." Acta Crystallographica Section C Structural Chemistry 70, no. 3 (2014): 285–88. http://dx.doi.org/10.1107/s2053229614002472.

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The title compound,catena-poly[[[diaqua(methanol-κO)copper(II)]-μ-N-(4-methylpyrimidin-2-yl-κN1)pyrazin-2-amine-κ2N1:N4] [[aqua(aqua/methanol-κO)(perchlorato-κO)copper(II)]-μ-N-(4-methylpyrimidin-2-yl-κN1)pyrazin-2-amine-κ2N1:N4] tris(perchlorate) methanol monosolvate 1.419-hydrate], {[Cu(C9H9N5)(CH3OH)(H2O)2][Cu(C9H9N5)(ClO4)(CH3OH)0.581(H2O)1.419](ClO4)3·CH3OH·1.419H2O}n, is a one-dimensional straight-chain polymer ofN-(4-methylpyrimidin-2-yl)pyrazin-2-amine (L) with Cu(ClO4)2. The complex consists of two crystallographically independent one-dimensional chains in which the CuIIatoms exhibit two different octahedral coordination geometries. TheLligand coordinates to two CuIIcentres in a tridentate manner, with the pyrazine ring acting as a bridge linking the CuIIcoordination units and building an infinite one-dimensional chain. Extensive hydrogen bonding among perchlorate anions, water molecules andLligands results in three-dimensional networks.

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6

Soldin, Željka, Boris-Marko Kukovec, Milica Kovačić, Marijana Đaković, and Zora Popović. "The Anion Impact on Dimensionality of Cadmium(II) Complexes with Nicotinamide." Chemistry 5, no. 2 (2023): 1357–68. http://dx.doi.org/10.3390/chemistry5020092.

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Three novel cadmium(II) coordination compounds, the dimeric [Cd(CH3COO)2(nia)2]2 (1), the polymeric {[Cd(nia)4](ClO4)2}n (2), and the monomeric [Cd(H2O)3(nia)3](ClO4)2·nia (3), were prepared in the reactions of the nicotinamide (pyridine-3-carboxamide, nia) with the corresponding cadmium(II) salts. All prepared compounds were characterized by elemental analyses, FT-IR spectroscopy, TGA/DTA, and single crystal X-ray analysis. The impact of anions (acetate, perchlorate) and solvent used on the dimensionality of cadmium(II) complexes and the cadmium(II) coordination environment was investigated. The bridging capabilities of acetate ions enabled the formation of dimers in the crystal structure of 1. It was shown that the dimensionality of perchlorate complexes depends on the solvent used. The coordination polymer 2 is isolated from an ethanol solution, while monomeric compound 3 was obtained by using a water/ethanol mixture as a solvent. The pentagonal-bipyramidal coordination of cadmium(II) was found in the presence of chelating and bridging acetate ions in 1. In the presence of non-coordinating perchlorate anions in 2 and 3, the coordination geometry of cadmium(II) is found to be octahedral. The supramolecular amide-amide homosynthon R22(8) was preserved in the hydrogen-bonded frameworks of all three compounds.

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7

Hennings, Erik, Horst Schmidt, and Wolfgang Voigt. "Crystal structure of iron(III) perchlorate nonahydrate." Acta Crystallographica Section E Structure Reports Online 70, no. 12 (2014): 477–79. http://dx.doi.org/10.1107/s1600536814024295.

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Since the discovery of perchlorate salts on Mars and the known occurrence of ferric salts in the regolith, there is a distinct possibility that the title compound could form on the surface of Mars. [Fe(H2O)6](ClO4)3·3H2O was crystallized from aqueous solutions at low temperatures according to the solid–liquid phase diagram. It consists of Fe(H2O)6octahedra (point group symmetry -3.) and perchlorate anions (point group symmetry .2) as well as non-coordinating water molecules, as part of a second hydrogen-bonded coordination sphere around the cation. The perchlorate appears to be slightly disordered, with major–minor component occupancies of 0.773 (9):0.227 (9).

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8

Tsymbal, Liudmyla V., Vladimir B. Arion та Yaroslaw D. Lampeka. "The first structural characterization of the protonated azacyclam ligand in catena-poly[[[(perchlorato)copper(II)]-μ-3-(3-carboxypropyl)-1,5,8,12-tetraaza-3-azoniacyclotetradecane] bis(perchlorate)]". Acta Crystallographica Section E Crystallographic Communications 75, № 11 (2019): 1700–1704. http://dx.doi.org/10.1107/s205698901901377x.

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The asymmetric unit of the title compound, catena-poly[[[(perchlorato-κO)copper(II)]-μ-3-(3-carboxypropyl)-1,5,8,12-tetraaza-3-azoniacyclotetradecane-κ4 N 1,N 5,N 8,N 12] bis(perchlorate)], {[Cu(C13H30N5O2)(ClO4)](ClO4)2} n , (I), consists of a macrocyclic cation, one coordinated perchlorate anion and two perchlorate ions as counter-anions. The metal ion is coordinated in a tetragonally distorted octahedral geometry by the four secondary N atoms of the macrocyclic ligand, the mutually trans O atoms of the perchlorate anion and the carbonyl O atom of the protonated carboxylic acid group of a neighbouring cation. The average equatorial Cu—N bond lengths [2.01 (6) Å] are significantly shorter than the axial Cu—O bond lengths [2.379 (8) Å for carboxylate and average 2.62 (7) Å for disordered perchlorate]. The coordinated macrocyclic ligand in (I) adopts the most energetically favourable trans-III conformation with an equatorial orientation of the substituent at the protonated distal 3-position N atom in a six-membered chelate ring. The coordination of the carboxylic acid group of the cation to a neighbouring complex unit results in the formation of infinite chains running along the b-axis direction, which are crosslinked by N—H...O hydrogen bonds between the secondary amine groups of the macrocycle and O atoms of the perchlorate counter-anions to form sheets lying parallel to the (001) plane. Additionally, the extended structure of (I) is consolidated by numerous intra- and interchain C—H...O contacts.

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9

Paoli, Paola, Eleonora Macedi, Patrizia Rossi, Luca Giorgi, Mauro Formica та Vieri Fusi. "Crystal structure of the BaII-based CoII-containing one-dimensional coordination polymer poly[[aqua{μ4-2,2′-[(4,10-dimethyl-1,4,7,10-tetraazacyclododecane-1,7-diyl)bis(methylidene)]bis(4-oxo-4H-pyran-3-olato)}perchloratocobaltbarium] perchlorate]". Acta Crystallographica Section E Crystallographic Communications 73, № 12 (2017): 1806–11. http://dx.doi.org/10.1107/s2056989017015638.

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The title compound, {[Ba{Co(H-2L1)}(ClO4)(H2O)]ClO4}n,L1 =4,10-bis[(3-hydroxy-4-pyron-2-yl)methyl]-1,7-dimethyl-1,4,7,10-tetraazacyclododecane, is a one-dimensional coordination polymer. The asymmetric unit consists of a {Ba[Co(H–2L1)](ClO4)(H2O)}+cationic fragment and a non-coordinating ClO4−anion. In the neutral [Co(H–2L1)] moiety, the cobalt ion is hexacoordinated in a trigonal–prismatic fashion by the surrounding N4O2donor set. The Ba2+ion is nine-coordinated and exhibits a distorted [BaO9] monocapped square-antiprismatic geometry, the six oxygen atoms coming from three distinct [Co(H–2L1)] moieties, while the remaining three vertices are occupied by the oxygen atoms of a bidentate perchlorate anion and a water molecule. A barium–μ2-oxygen motif develops along theaaxis, connecting symmetry-related dinuclear BaII–CoIIcationic fragments in a wave-like chain, forming a one-dimensional metal coordination polymer. Non-coordinating ClO4−anions are located in the space between the chains. Weak C—H...O hydrogen bonds involving both coordinating and non-coordinating perchlorate anions build the whole crystal architecture. To our knowledge, this is the first example of a macrocyclic ligand forming a BaII-based one-dimensional coordination polymer, containing CoIIions surrounded by a N4O2donor set.

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10

Harrowfield, JM, H. Miyamae, TM Shand, BW Skelton, AA Soudi, and AH White. "Lewis-Base Adducts of Lead(II) Compounds. IX. Synthetic and Structural Studies of Some 1:1 Adducts of 'cyclam' and Its Hexamethylated Derivative 'tet-b' With Lead(II) Oxoanion Salts." Australian Journal of Chemistry 49, no. 10 (1996): 1051. http://dx.doi.org/10.1071/ch9961051.

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Syntheses and room-temperature single-crystal X-ray structure determinations are recorded for 1 : 1 adducts of (1,4,8,11-tetraazacyclotetradecane) ('cyclam') with lead(II) perchlorate and (7R*,14R*)-5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane ('tet -b') with lead(II) nitrate, perchlorate and acetate ('ac'). [( cyclam ) Pb (ClO4)2] is orthorhombic, Pb21a, a 16.024(7), b 13.595(4), c 8.6810(5) Ǻ, Z = 4 f.u .; R was 0.055 for No 1318 independent 'observed' (I > 3σ(I)) reflections. [( tet -b) Pb (NO3)2]2 is monoclinic. P 21/a, a 16.15(2), b 14.550(6), c 19.775(2) Ǻ, β 90.86(5)°, Z = 4 dimers ; R 0.074 for No 3184. [( tet -b) Pb (ClO4)2]2.H2O is monoclinic, P 21/c, a 13.663(9), b 9.031(3). c 20.61(1) Ǻ, β 100.40(3)°, Z = 4 f.u .; R 0.044 for No 2857. [( tet -b) Pb (ac)2].2H2O is triclinic, Pī , a 13.138(5), b 10.924(4), c 10.518(3) Ǻ, α 115.48(3), β 91.95(2), γ 102.38(2)°, Z = 2 f.u .; R 0.031 for No 6485. In all complexes, the macrocycle-N4 ligand occupies one 'side' of the coordination sphere of the lead atom, with anionic oxygens opposed; the cyclam/perchlorate complex is, like the nitrate, mononuclear with seven-coordinate (N4)PbO3 with a bidentate O,O'- and a unidentate O- perchlorate . In the tet-b acetate, the anionic oxygen atoms are surprisingly sparse, comprising simply a bidentate acetate in a mononuclear (N4)PbO2 environment with the other (lattice) acetate bonded to the macrocycle axial NH hydrogens . The nitrate and perchlorate complexes involve bridging anions: in the nitrate. a central centrosymmetric PbO2Pb array is found, the lead atoms being bridged by one oxygen of a bidentate nitrate, the other nitrate being unidentate and the coordination sphere (N4)PbO4: in the perchlorate , again a centrosymmetric dimer is found, the lead atoms being linked by O,O'-bridging perchlorates (again with (N4)PbO2 coordination environments), the complex being essentially [( tet -b) Pb (OClO2O)2Pb( tet -b)](ClO4)2H2O. The structure of [cyclamH4]4+ (NO3-)4.2H2O is also recorded [triclinic, Pī , a 8.626(2), b 8.549(1), c 8.400(2) Ǻ, α 80.60(2), β 76.62(2), γ 65.06(1)°, Z = 1; R 0.044 for No 1539], together with that of the diprotonated hexamethyl derivative [tet-bH2]2+(ClO4-)2.CH3OH [monoclinic, P21/c, a 11.296(3), b 8.834(8), c 26.22(1) Ǻ, β 99.05(3)°, Z = 4 f.u .; R 0.063 for No 2583].

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11

Curtis, NF, and GJ Gainsford. "Studies of Some Tetraazacyclopentadecadiene Complexes of Nickel(II). The Crystal and Molecular-Structure of (1RS,8SR)-(5,7,7,13,15,15-Hexamethyl-1,4,8,12-Tetraazacyclopentadeca-4,1 2-Diene)Nickel(II) Perchlorate Hydrate." Australian Journal of Chemistry 39, no. 10 (1986): 1509. http://dx.doi.org/10.1071/ch9861509.

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The crystal and molecular structure has been determined by X-ray diffractometry for the singlet ground state nickel(II) compound of a fifteen- membered tetraaza macrocyclic ligand , formed by reaction of a mixture of tris ( ethanediamine )nickel(II) and tris (propane-1,3- diamine )nickel(II) perchlorates with acetone. The compound, (1RS,8SR)- 5,7,7,13,15,15-hexamethyl-1,4,8,12-tetraazacyclopentadeca-4,12- diene )nickel(II) perchlorate hydrate, [Ni( hmpd )](ClO4)2.H2O, is monoclinic, space group P21/C, a 1158.76(14), b 1319.53(22), c 1630.35(21) pm, β 96.209(10)°, R 0.046, Rw 0.062 for 2798 reflections. The nickel(II) ion is in tetrahedrally distorted square-planar coordination [mean Ni-N distances 188.9 pm ( imine ), 191.9 pm (amine), displacements of nitrogens c. �20 pm from mean coordination plane]. Triplet ground state compounds [Ni( hmpd )( acac )]ClO4 and [{Ni( hmpd )}2C2O4](ClO4)2, with the macrocycle in folded coordination, were prepared and converted into an isomeric form of [Ni( hmpd )](ClO4)2. The 3,5,7,7,13,15,15-heptamethyl homologue of [Ni( hmpd )]2+ was prepared by reaction of tris (propane-1,2-diamine)- and tris (propane-1,3-diamine)- nickel(II) perchlorates with acetone. The electronic (d-d), 1H N.M.R. and 13C N.M.R . spectra of compounds of these macrocyclic cations, and of (5,5,7,13,15,15-hexamethyl-1,4,8,12-tetraazacyclopentadeca-7,12-diene) nickel(II) are reported.

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12

Butcher, Ray J., та William Towns. "Bis(2-{1-[2-(2-hydroxyethylamino)ethylimino]propyl}phenolato)-1κ4 O,N,N′,O′;2κ4 O,N,N′,O′-methanol-2κO-μ-perchlorato-1:2κ2 O:O′-perchlorato-1κO-dicopper(II)". Acta Crystallographica Section E Structure Reports Online 63, № 11 (2007): m2863—m2864. http://dx.doi.org/10.1107/s1600536807053500.

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The title compound, [Cu2(C13H18N2O2)2(ClO4)2(CH4O)], consists of two six-coordinate Jahn–Teller-distorted copper(II) complex units with the tetradentate ligand 2-{1-[2-(2-hydroxyethylamino)ethylimino]propyl}phenolate observed in a planar coordination mode. Each copper center has octahedral coordination geometry. The complex units are axially connected by a bridging perchlorate anion. For one copper center, the other axial position is occupied by a terminal methanol molecule, while for the other copper center, the axial position is occupied by a weakly coordinated second perchlorate anion. As well as intermolecular N—H...O hydrogen bonds, the two Cu complex units are also linked by intramolecular O—H...O hydrogen-bonding interactions. The four O atoms of one perchlorate are disordered over four positions; the site occupancy factors are 0.43. 0.25, 0.19 and 0.13.

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13

Curtis, Neil F., Olga P. Gladkikh, and Mark M. Turnbull. "Copper(II) Compounds with Amine Imine Ligands; Structures of (2,4,6,9,11-Pentamethyl-5,8-diazadodeca-4,8-diene-2,11-diamine)copper(II) Perchlorate and (2,4-Dimethyl-5,8,11- triazatridec-4-ene-2,13-diamine)copper(II) Perchlorate." Australian Journal of Chemistry 51, no. 7 (1998): 631. http://dx.doi.org/10.1071/c97172.

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(2,4,6,9,11-Pentamethyl-5,8-diazadodeca-4,8-diene-2,11-diamine)copper(II) perchlorate, formed by reaction of (propane-1,2-diamine)copper(II) perchlorate with 4-amino-4-methylpentan-2-one, has the copper(II) ion in tetrahedrally twisted [±0·23(1) Å] square planar coordination by the tetradentate ligand, with a weak axial interaction with a perchlorate ion with Cu–O 2·64(1) Å [C15H32Cl2CuN4O8, Mr 530·89, monoclinic, space group P21/n, a 9·938(7), b 13·591(7), c 17·149(9) Å, β 106·65(5)°, Z 4, R1 0·066 for 1096 reflections]. 2,4-Dimethyl-5,8,11-triazatridec-4-ene-2,13-diamine)copper(II) perchlorate, similarly formed from (triethylenetetramine)copper(II) perchlorate, has the copper(II) ion in square pyramidal coordination by the pentadentate ligand with the terminal primary amine group of the triamine residue in the axial site with Cu–N 2·189(5) Å. The basal plane of four nitrogen donor atoms is tetrahedrally twisted [±0·18(1) Å], with the copper(II) ion displaced from this plane by 0·27(1) Å [C12H29Cl2CuN5O8, Mr 505·84, monoclinic, space group P21/c, a, 9·934(2), b, 15·719(3), c, 13·688(3) Å, β 107·83(3)°, Z 4, R1 0· 044 for 1485 reflections].

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14

Zertal, Yuval, Natalia Fridman, Levi Gottlieb, and Yoav Eichen. "The Crystal Structure of Dodecahedral Ba2+ Hexa-Perchlorate Complex Tetrakis 1-N-Propyl-3-vinyl-imidazol-1-ium·Barium Hexa-Perchlorate." Molecules 29, no. 21 (2024): 5010. http://dx.doi.org/10.3390/molecules29215010.

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In cold methanol, energetic ionic liquid 1-n-propyl-3-vinyl-imidazol-1-ium perchlorate, 1, crystallizes in the presence of excess Ba(ClO4)2, 2, into tetrakis 1-propyl-3-vinyl-imidazol-1-ium·barium hexa-perchlorate, 3. Crystals of 3, with molecular formula (C8H13N2)4·BaCl6O24, are colorless and monoclinic, with space group P21/c. The crystal structure is characterized by a dodecahedral coordination around the barium atom, with each perchlorate chelating Ba2+ in a κ2O,O’ fashion, and the Ba(ClO4)64− anion is surrounded by four imidazolium cations.

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15

Puttreddy, Rakesh, and Peter J. Steel. "Pyridine N-oxide: a hyperdentate argentophile." CrystEngComm 16, no. 4 (2014): 556–60. http://dx.doi.org/10.1039/c3ce42030b.

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16

Cheng, Xiao-Chun, and Xiao-Hong Zhu. "Synthesis, Structure and Properties of Lanthanide-Organic Frameworks with Imidazolylmethylisophthalate Ligands." Zeitschrift für Naturforschung B 68, no. 11 (2013): 1233–38. http://dx.doi.org/10.5560/znb.2013-3186.

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Three new lanthanide-organic frameworks {[Ln(L)(OClO3)(H2O)]·0.5H2O}n [Ln=Sm (1), Eu (2), Er (3)] have been prepared by hydrothermal reactions of the corresponding lanthanide oxide (Ln2O3), silver perchlorate (AgClO4) and 5-(imidazol-1-ylmethyl)isophthalic acid. The complexes have been characterized by single-crystal and powder X-ray diffraction, IR spectroscopy, and elemental analyses. In 1-3, the metal centers are eight-coordinated to show polyhedral coordination geometries with an LnO8 donor set. The imidazolyl groups are free of coordination, and the perchlorate and carboxylate groups bridge the Ln3+ cations leading to the formation of wave-like layer structures containing metal-chains. The fluorescence properties of complex 2 were investigated.

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17

Tice, Daniel B., Robert D. Pike, and Deborah C. Bebout. "Contrasting coordination behavior of Group 12 perchlorate salts with an acyclic N3O2 donor ligand by X-ray crystallography and 1H NMR." Dalton Transactions 45, no. 32 (2016): 12871–83. http://dx.doi.org/10.1039/c6dt02322c.

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18

Das, Biswanath, Matti Haukka та Ebbe Nordlander. "(μ-Acetato-κ2O:O′)[μ-2,6-bis({bis[(pyridin-2-yl-κN)methyl]amino-κN}methyl)-4-methylphenolato-κ2O:O](methanol-κO)dizinc bis(perchlorate)". Acta Crystallographica Section E Structure Reports Online 70, № 4 (2014): m120—m121. http://dx.doi.org/10.1107/s1600536814004279.

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The binuclear title complex, [Zn2(C33H33N6O)(CH3COO2)(CH3OH)](ClO4)2, was synthesized by the reaction between 2,6-bis({[bis(pyridin-2-yl)methyl]amino}methyl)-4-methylphenol (H-BPMP), Zn(OAc)2and NaClO4. The two ZnIIions are bridged by the phenolate O atom of the octadentate ligand and the acetate group. An additional methanol ligand is terminally coordinated to one of the ZnIIions, rendering the whole structure unsymmetric. Other symmetric dizinc complexes of BPMP have been reported. However, to the best of our knowledge, the present structure, in which the two ZnIIions are distinguishable by the number of coordinating ligands and the coordination geometries (octahedral and square-pyramidal), is unique. The dizinc complex is a dication, and two perchlorate anions balance the charge. The –OH group of the coordinating methanol solvent molecule forms a hydrogen bond with a perchlorate counter-anion. One of the anions is disordered over two sets of sites with an occupancy ratio of 0.734 (2):0.266 (2).

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19

Kaase, Dominic, та Julia Klingele. "trans-Bis[2,5-bis(pyridin-2-yl)-1,3,4-thiadiazole-κ2N2,N3]bis(methanol-κO)iron(II) bis(perchlorate)". Acta Crystallographica Section E Structure Reports Online 70, № 7 (2014): m252—m253. http://dx.doi.org/10.1107/s160053681401277x.

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The title compound, [Fe(C12H8N4S)2(CH3OH)2](ClO4)2, crystallized in the solvent-free form from a methanol solution. The FeIIion is located on a centre of inversion. The distorted N4O2octahedral coordination geometry is formed by twoN,N′-chelating equatorial 2,5-bis(pyridin-2-yl)-1,3,4-thiadiazole ligands and axially coordinating methanol coligands, resulting in the mononucleartrans-(N2,N3,O)2coordination mode. The methanol co-ligand is involved in a hydrogen bond to the perchlorate counter-ion.

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20

Dick, Stefan, and Armin Weiss. "Neue dreizähnige Liganden vom Typ N-AlkyI-N,N-bis(2-pyridylmethyl)amin/ New Tridentate Ligands of the Type N-Alkyl-N,N-bis(2-pyridylmethyl)amine." Zeitschrift für Naturforschung B 52, no. 2 (1997): 188–92. http://dx.doi.org/10.1515/znb-1997-0207.

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Abstract New tridentate ligands of the type N-alkyl-N,N-bis(2-pyridylmethyl)amine (alkyl = me thyl, benzyl, adamantyl) have been synthesized by reaction of alkylamines with 2 -(chlor-methyl)pyridine in alkaline solution. These amines are preferably isolated and stored as per chlorates. The perchlorate of the methyl substituted ligand has been crystallized in two modifications that differ in the twisting of the aromatic rings and in the coordination of the perchlorate anions.

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21

Curtis, Neil F., and Jan Wikaira. "The Preparation and Structure of [(2,4-Dimethyl-8-ethyl-5,8-diazadec-4-ene-2-amine)chlorocopper(II)] Perchlorate." Journal of Crystallography 2013 (July 17, 2013): 1–4. http://dx.doi.org/10.1155/2013/753625.

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Copper(II) chloride and perchlorate, N,N-diethylethane-1,2-diamine, react in (m)ethanol with acetone and ammonia to form [(2,4-dimethyl-8-ethyl-5,8-diazadec-4-ene-2-amine)chlorocopper(II)] perchlorate, C12H27Cl2CuN3O4, , monoclinic, C2/c, (Hall-C2/c); a, 26.418(1), b, 9.7385(4); c, 14.0993(5) Å; β, 91.134(3)°. This has copper(II) in tetrahedrally distorted square-planar coordination by one primary, one tertiary, and one imine nitrogen atom and the chloride ion.

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22

Savastano, Matteo, Carlotta Cappanni, Carla Bazzicalupi, Cristiana Lofrumento, and Antonio Bianchi. "Anion Coordination into Ligand Clefts." Crystals 13, no. 5 (2023): 823. http://dx.doi.org/10.3390/cryst13050823.

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A tripodal anion receptor has been obtained by an easy and fast single-reaction synthesis from commercial reagents. The three ligand arms-bearing aromatic groups able to form anion–π interactions define ligand clefts where large anions, such as perchlorate and perrhenate, are included. We report here the synthesis of the ligand, its acid/base properties in an aqueous solution which has been used to direct the synthesis of anion complexes, and the crystal structure of the free ligand and its anion complexes H3L(ClO4)2·H2O and H3L(ReO4)2.

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23

Bouheroum, Sofiane, Aouatef Cherouana, Adel Beghidja, Slimane Dahaoui, and Pierre Rabu. "A new copper(II) coordination polymer containing chains of interconnected paddle-wheel antiferromagnetic clusters." Acta Crystallographica Section C Structural Chemistry 73, no. 12 (2017): 1050–55. http://dx.doi.org/10.1107/s2053229617013766.

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The construction of supramolecular architectures based on inorganic–organic coordination frameworks with weak noncovalent interactions has implications for the rational design of functional materials. A new crystalline binuclear copper(II) one-dimensional polymeric chain, namely catena-poly[[[tetrakis(μ-4-azaniumylbutanoato-κ2 O:O′)dicopper(II)(Cu—Cu)]-μ-chlorido-[diaquadichloridocopper(II)]-μ-chlorido] bis(perchlorate)], {[Cu3Cl4(C4H9NO2)4(H2O)2](ClO4)2} n , was obtained by the reaction of 4-aminobutyric acid (GABA) with CuCl2·2H2O in aqueous solution. The structure was established by single-crystal X-ray diffraction and was also characterized by IR spectroscopy and magnetic measurements. The crystal structure consists of [{Cu2(GABA)4}{CuCl4(H2O)2}]+ cations and isolated perchlorate anions. Two symmetry-related CuII centres are bridged via carboxylate O atoms into a classical paddle-wheel configuration, with a Cu...Cu distance of 2.643 (1) Å, while bridging Cl atoms complete the square-pyramidal geometry of the metal atoms. The Cl atoms connect the paddlewheel moieties to a second CuII atom lying on an octahedral site, resulting in infinite helical chains along the c axis. The packing motif exhibits channels containing free perchlorate anions. The crystal structure is stabilized by hydrogen bonds between the perchlorate anions, the coordinated water molecules and the ammonium groups of the polymeric chains. The magnetic analysis of the title compound indicates a nontrivial antiferromagnetic behaviour arising from alternating weak–strong antiferromagnetic coupling between neighbouring CuII centres.

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24

Liu, Ming-Liang, and Qiong Ye. "A tetranuclear cadmium(II) complex based on the 2-(quinolin-8-yloxy)acetonitrile ligand." Acta Crystallographica Section C Crystal Structure Communications 69, no. 1 (2012): 17–20. http://dx.doi.org/10.1107/s0108270112049360.

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The hydrothermal reaction of 2-(quinolin-8-yloxy)acetonitrile and Cd(ClO4)2yielded the noncentrosymmetric coordination complex tetrakis[μ-2-(quinolin-8-yloxy)acetato]tetrakis[μ-2-(quinolin-8-yloxy)acetonitrile]tetracadmium tetrakis(perchlorate) dihydrate, [Cd4(C11H8NO3)4(C11H8N2O)4](ClO4)4·2H2O. The local coordination environment around the CdIIcation can be best described as a capped octahedron defined by two N atoms and five O atoms from three ligands. The CdIIcations are linked by the ligands with Cd—O—Cd and Cd—O—C—C—O—Cd bridges, forming tetranuclear units, there being two independent tertranuclear units in the structure. The fourfold rotoinversion centre sits at the centre of each Cd4core. The two perchlorate anions in the asymmetric unit are linked by the water molecule through O—H...O hydrogen bonds.

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Govindaraj, J., K. Rajkumar, A. S. Ganeshraja, K. Anbalagan та A. SubbiahPandi. "Crystal structure oftrans-aqua(perchlorato-κO)bis(propane-1,3-diamine-κ2N,N′)copper(II) perchlorate". Acta Crystallographica Section E Structure Reports Online 70, № 11 (2014): 438–40. http://dx.doi.org/10.1107/s1600536814023496.

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In the title compound, [Cu(ClO4)(C3H10N2)2(H2O)]ClO4, the CuIIatom has a distorted octahedral coordination sphere and is coordinated by the N atoms of two propane-1,3-diamine ligands in the equatorial plane. The axial positions are occupied by a water O atom and an O atom of a disordered perchlorate anion [occupancy ratio 0.631 (9):0.369 (9)]. In the crystal, the various components are linkedviaO—H...O, N—H...O and C—H...O hydrogen bonds, forming sheets lying parallel to (001).

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26

Frantzana, Eirini, Ioannis Loukas, Antonios G. Hatzidimitriou, Demetrios Tzimopoulos, and Pericles Akrivos. "Coordination Modes of Para-Substituted Benzoates Towards Divalent Copper Centers in the Presence of Diimines." Inorganics 12, no. 12 (2024): 301. http://dx.doi.org/10.3390/inorganics12120301.

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The coordination modes of several para-substituted benzoates towards a copper(II) center is investigated in the presence of α-diimines. The coordination environment of the metal ion also includes nitrogen atoms from 1,10-phenanthroline (phen) or 2,2′-bipyridine (bipy) and, occasionally, oxygen atoms from coordinated water, ethanol molecules or nitrate ions. The compounds are investigated by visible and infrared spectroscopy and by single crystal X-ray diffraction. Although the reaction scheme involved equimolar amounts of the reactants, compounds with metal-to-benzoate-to-diimine ratios of 1:2:1, 1:1:2 and 1:1:1 are realized, being either neutral or cationic in nature and either mono- or dinuclear. The better coordinating ability of nitrate relative to perchlorate is verified, as well as the subtle role of the para-substituent on the coordination mode of the benzoate and consequently on the overall structure of the compounds formed.

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27

Li, Zhongfang, Suwen Wang, Qian Zhang, and Xianjin Yu. "Bis[N-(8-quinolyl)pyridine-2-carboxamidato]iron(III) perchlorate monohydrate." Acta Crystallographica Section E Structure Reports Online 63, no. 11 (2007): m2781. http://dx.doi.org/10.1107/s1600536807048556.

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The asymmetric unit of the title compound, [Fe(C15H10N3O)2]ClO4·H2O, contains one iron(III) cation chelated by two N-(8-naphthyl)-2-pyridine-2-carboxamidate ligands via six N atoms, exhibiting an octahedral coordination geometry, a perchlorate anion and a water molecule. The Fe—N bond lengths are in the range 1.880 (3)–1.972 (3) Å. Each ligand is planar (r.m.s. deviations = 0.0314 and 0.0282 Å). The dihedral angle between the two ligand planes is 86.55 (1)°. There is a weak intermolecular hydrogen bond between the water and the perchlorate groups.

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28

Plater, M. John, Mark R. St J. Foreman, and Alexandra M. Z. Slawin. "Coordination Networks with 1,3-Bis(4-pyridyl)propane. A Flexible Ligand Exhibiting Supramolecular Isomerism." Journal of Chemical Research 23, no. 2 (1999): 74–75. http://dx.doi.org/10.1177/174751989902300204.

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29

Caminiti, R., G. Cerioni, G. Crisponi, and P. Cucca. "An X-ray and NMR Study on Cerium(III) and Magnesium(II) Perchlorate Solutions." Zeitschrift für Naturforschung A 43, no. 4 (1988): 317–25. http://dx.doi.org/10.1515/zna-1988-0406.

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Metal-perchlorate solutions have been investigated by the X-ray scattering technique and 35Cl NMR spectroscopy. The aim of this work was to obtain structural information on the complex formation between the Cerium and the Perchlorate group and on the ClO-4 - H2O interactions. The NMR data, the correlation functions and the analysis of the structure functions agree with the literature information about the Ce - (OClO3)z species present in aqueous solutions. Good agreement with experimental data is achieved through a model in which the Perchlorate ions are bonded as monodentate ligands to the Cerium(III). No complex formation is confirmed for Mg(II). The cations also possess a second coordination shell of water molecules. Some indications have been obtained supporting the presence of ClO-4 - H2O contacts.

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30

Elerman, Y., A. Elmali, and I. Svoboda. "Crystal Structures and Magnetic Properties of (2,2'-Dipyridyl)-(3-methoxysalicylaldiminato)copper(II) Perchlorate and (2,2'-Dipyridyl)-(4-methoxysalicylaldiminato)copper(II) Perchlorate." Zeitschrift für Naturforschung B 57, no. 5 (2002): 519–23. http://dx.doi.org/10.1515/znb-2002-0508.

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The mixed-ligand dinuclear complexes (2,2'-dipyridyl)-(3-methoxysalicylaldiminato)copper( II) perchlorate (1) and (2,2'-dipyridyl)-(4-methoxysalicylaldiminato)copper(II) perchlorate (2)were synthesized and their crystal structures determined. Both structures consist of a dimeric unit involving a planar Cu2O2 group. In both structures, the coordination sphere of the Cu atoms can be described as an elongated octahedron where the basal plane is formed by the twoN atoms of the 2,2'-dipyridyl molecule and the two O atoms of the salicylaldehyde anion. The phenoxo O atom is the negative ligand of the monomeric unit. Two apical Cu-O contacts complete the 4+2 coordination of the Cu atoms. They correspond to one of the O atoms of the perchlorate anion and to the O atom of the nearest salicylaldehyde molecule. Variable-temperature magnetic susceptibility data obey the Curie-Weiss law with Θ = -10.3(2) K for 1 and -10.1(2) K for 2. The decrease of the effective magnetic moment from 1.89(7) μB at 300 K to 1.77(7) μB at 70 K for 1 and from 1.88(8) μB at 300 K to 1.76(8) μB at 70 K for 2 and the negative Weiss constants indicate weak antiferromagnetic interactions between the two copper atoms in the dimeric units.

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31

Xu, Jing, Shan Gao, Seik Weng Ng та Edward R. T. Tiekink. "Bis[(E)-N-(pyridin-3-ylmethylidene)hydroxylamine-κN 1]silver(I) perchlorate". Acta Crystallographica Section E Structure Reports Online 68, № 6 (2012): m735—m736. http://dx.doi.org/10.1107/s1600536812019290.

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Each of the ions in the title salt, [Ag(C6H6N2O)2]ClO4, is completed by the application of crystallographic twofold symmetry. The AgI atom is coordinated by two pyridine N atoms in an almost linear fashion [N—Ag—N = 170.0 (2)°], with the T-shaped coordination geometry being completed by a weakly associated perchlorate-O atom. Supramolecular zigzag chains along [100] mediated by O—H...N hydrogen bonds [as parts of R 2 2(6) loops] feature in the crystal packing. The perchlorate O atoms are disordered over two sets of sites in a statistical ratio.

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32

Elmali, A., Y. Elerman, and I. Svoboda. "Crystal Structure and Magnetic Properties of (2,2'-Dipyridyl)-(2-acetylphenolato)copper(II) Perchlorate." Zeitschrift für Naturforschung B 57, no. 10 (2002): 1129–32. http://dx.doi.org/10.1515/znb-2002-1009.

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The mixed-ligand dinuclear complex (2,2'-dipyridyl)-(2-acetylphenolato)copper(II) perchlorate was synthesized and its crystal structures determined. The structure consists of a dimeric unit involving a planar Cu2O2 group. The coordination sphere of the Cu atom can be described as an alongated octahedron where the basal plane is formed by the two N atoms of the 2,2'-dipyridyl molecule and the two O atoms of the acetophenon anion. Two apical Cu - O contacts complete the 4+2 coordination of the Cu atoms. They correspond to one of the O atoms of the perchlorate anion and to the O atom of the second unit. Magnetic susceptibility data obey the Curie-Weiss law with θ = -8.1(2) K. The decreasing of the effective magnetic moment from 1.94(8) μB at 300 K to 1.86(8) μB at 70 K and the negative Weiss constant indicate weak antiferromagnetic interactions between the two copper atoms in the dimeric units.

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33

Liu, Jian-Jun, Ying Dong, Li-Zhen Chen, Ling Wang, Shu-Biao Xia, and Chang-Cang Huang. "A two-dimensional CdII coordination polymer based on naphthalenediimide: synthesis, crystal structure and photochromic properties." Acta Crystallographica Section C Structural Chemistry 74, no. 1 (2018): 94–99. http://dx.doi.org/10.1107/s2053229617017958.

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Naphthalenediimides, a class of organic dyes with an expanded π-electron-deficient plane, have attracted considerable interest because of their photoinduced electron transfer from neutral organic moieties to stable anionic radicals. This makes them excellent candidates for organic linkers in the construction of photochromic coordination polymers. Such a photochromic two-dimensional coordination polymer has been prepared using N,N′-bis(pyridin-4-ylmethyl)naphthalene-1,8:4,5-bis(dicarboximide) (DPMNI). In crystallization tubes, upon slow diffusion of an MeOH solution of cadmium perchlorate into a CHCl3 solution of DPMNI, the complex poly[[bis[μ2-2,7-bis(pyridin-4-ylmethyl)benzo[imn][3,8]phenanthroline-1,3,6,8(2H,7H)-tetrone-κ2 N:N′]bis(perchlorato-κO)cadmium(II)] chloroform tetrasolvate], {[Cd(C26H16N4O4)2(ClO4)2]·4CHCl3} n , (I), was obtained. The asymmetric unit contains one Cd2+ cation, two DPMNI ligands, two coordinated ClO4 − anions and four CHCl3 solvent molecules. Each Cd2+ cation is interconnected by four DPMNI linkers to generate a neutral two-dimensional naphthalenediimide coordination network with all the ClO4 − anions above or below this plane. Strong interlaminar anion–π interactions between the coordinated ClO4 − anions and the imide rings of an adjacent layer lead to a three-dimensional supramolecular structure. Compound (I) exhibits reversible photochromic behaviour and photocontrolled tunable luminescence properties, which may originate from the photoinduced electron-transfer generation of radicals in the DPMNI ligand.

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34

Singh, Suryabhan, and Rajendran Karthik. "Structural diversities in Cu(i) and Ag(i) sulfonate coordination polymers and their anion exchange properties." CrystEngComm 17, no. 38 (2015): 7363–71. http://dx.doi.org/10.1039/c5ce01452b.

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35

Dickert, Franz L., and Michael W. Vonend. "Konkurrierende Koordination von Kronenethern, Perchloratanionen und Lösungsmittelmolekülen am Co(II)-Ion — Eine Leitfähigkeits-und NMR-Studie in Nitromethan / Competitive Coordination of Crown Ethers, Perchlorate Anions and Solvent Molecules at Co(II)-Ions — A Conductivity and NMR Study on Nitromethane." Zeitschrift für Naturforschung B 42, no. 1 (1987): 42–46. http://dx.doi.org/10.1515/znb-1987-0109.

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Abstract The 1:1 complexes between Co(II) and the crown ethers dibenzo[24]crown-8, dibenzo[18]-crown-6 and [18]crown-6 show a molar conductivity in nitromethane which indicates coordination of even perchlorate anions. The substitution of this anion by solvent molecules can be monitored by conductometric titrations. This procedure reveals that dibenzo[24]crown-8 and [18]crown-6 is a potent five dentate ligand whereas dibenzo[18]crown-6 strongly coordinates only via three donor atoms. The mixed complexes with crown ether and methanol show strong outer-sphere associa-tion with the Perchlorate anions, which can be confirmed by investigations with [15]crown-5 complexes.

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36

Kadir, M. A., and Christopher J. Sumby. "Synthesis, Characterization and Crystal Structure of Coordination Polymers Developed as Anion Receptor." Solid State Phenomena 273 (April 2018): 134–39. http://dx.doi.org/10.4028/www.scientific.net/ssp.273.134.

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Reaction of diamide ligand, namelyN,N’-2,6-bis (4-pyridylmethyl) pyridine dicarboxamide (L) with cadmium nitrate and cadmium perchlorate has given rise to the formation of two types coordination polymers. Compound (CP1-Cd) with formula molecule {[Cd (L)2(H2O)2](NO3)2·6H2O}nis a one-dimensional coordination polymer while compound (CP2-Cd), with formula molecule {[Cd (L)2(H2O)2](ClO4)2·31⁄2H2O.CH3OH}n, is a two dimensional coordination polymer. These coordination polymers were preparedviaslow evaporation methods and completely characterized by combination of solid state techniques such as Fourier Transform Infrared (FTIR) spectroscopy, elemental analysis and X-ray crystallography. This study revealed that coordination polymers derived fromN,N’-2,6-bis (4-pyridylmethyl) pyridine dicarboxamide can accommodate anions with different sizes, showing good potential as anion receptor.

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Datta, Amitabha, Kuheli Das, Chiara Massera, et al. "A mixed valent heterometallic CuII/NaI coordination polymer with sodium–phenyl bonds." Dalton Trans. 43, no. 14 (2014): 5558–63. http://dx.doi.org/10.1039/c4dt00189c.

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A mixed valent heterometallic CuII/NaI coordination polymer (1) is generated by the reaction of a Schiff base ligand, (6,6′-(1E,1′E)-(2-hydroxypropane-1,3-diyl)bis(azan-1-yl-1-ylidene)bis(methan-1-yl-1-ylidene)bis(2-methoxyphenol)) with copper(ii) acetate and sodium perchlorate.

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38

Kratochvíl, Bohumil, Jan Ondráček, Jiří Novotný, and Václav Haber. "Structure of a copper(II) complex with a non-symmetrical tetradentate Schiff base." Collection of Czechoslovak Chemical Communications 56, no. 4 (1991): 858–64. http://dx.doi.org/10.1135/cccc19910858.

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The structure of (1-phenyl-3-{2-[(2-aminoethyl)amino]ethylimino}-1-buten-1-olato-O,N, N’,N”)-copper(II) perchlorate, [Cu(baden)]ClO4 was solved by Patterson and Fourier techniques and refined anisotropically to R = 0.066 for 2 205 unique observed reflections. The title complex (C14H20ClCuN3O5) crystallizes in the P21/c space group with the lattice parameters a = 10.435(1), b = 20.745(2), c = 8.457(1) Å, β = 108.56(1)°, Z = 4. The complex cation including the baden ligand contains two five-membered and one six-membered chelate rings, and the phenyl ring. The perchlorate anion is disordered. Two perchlorate oxygen positions, O22A and O33B, each with one half occupation factor value and four N3O donor atoms from the baden ligand complete the coordination geometry about the Cu atom on the square pyramid [Cu-O22A = 2.655(11)Å and Cu-O33B = 2.855(10)Å]. Weak hydrogen bonds among cations and anions were found in the structure.

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Bussey, Katherine A., Annie R. Cavalier, Jennifer R. Connell, et al. "Structural studies of (prop-2-en-1-yl)bis[(pyridin-2-yl)methylidene]amine hetero-scorpionate copper complexes." Acta Crystallographica Section C Structural Chemistry 71, no. 7 (2015): 526–33. http://dx.doi.org/10.1107/s2053229615010335.

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The structures of five compounds consisting of (prop-2-en-1-yl)bis[(pyridin-2-yl)methylidene]amine complexed with copper in both the CuIand CuIIoxidation states are presented, namely chlorido{(prop-2-en-1-yl)bis[(pyridin-2-yl)methylidene]amine-κ3N,N′,N′′}copper(I) 0.18-hydrate, [CuCl(C15H17N3)]·0.18H2O, (1),catena-poly[[copper(I)-μ2-(prop-2-en-1-yl)bis[(pyridin-2-yl)methylidene]amine-κ5N,N′,N′′:C2,C3] perchlorate acetonitrile monosolvate], {[Cu(C15H17N3)]ClO4·CH3CN}n, (2), dichlorido{(prop-2-en-1-yl)bis[(pyridin-2-yl)methylidene]amine-κ3N,N′,N′′}copper(II) dichloromethane monosolvate, [CuCl2(C15H17N3)]·CH2Cl2, (3), chlorido{(prop-2-en-1-yl)bis[(pyridin-2-yl)methylidene]amine-κ3N,N′,N′′}copper(II) perchlorate, [CuCl(C15H17N3)]ClO4, (4), and di-μ-chlorido-bis({(prop-2-en-1-yl)bis[(pyridin-2-yl)methylidene]amine-κ3N,N′,N′′}copper(II)) bis(tetraphenylborate), [Cu2Cl2(C15H17N3)2][(C6H5)4B]2, (5). Systematic variation of the anion from a coordinating chloride to a noncoordinating perchlorate for two CuIcomplexes results in either a discrete molecular species, as in (1), or a one-dimensional chain structure, as in (2). In complex (1), there are two crystallographically independent molecules in the asymmetric unit. Complex (2) consists of the CuIatom coordinated by the amine and pyridyl N atoms of one ligand and by the vinyl moiety of another unit related by the crystallographic screw axis, yielding a one-dimensional chain parallel to the crystallographicbaxis. Three complexes with CuIIshow that varying the anion composition from two chlorides, to a chloride and a perchlorate to a chloride and a tetraphenylborate results in discrete molecular species, as in (3) and (4), or a bridged bis-μ-chlorido complex, as in (5). Complex (3) shows two strongly bound Cl atoms, while complex (4) has one strongly bound Cl atom and a weaker coordination by one perchlorate O atom. The large noncoordinating tetraphenylborate anion in complex (5) results in the core-bridged Cu2Cl2moiety.

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Harrison, William T. A., M. John Plater, Ben M. deSilva deSilva, and Mark R. St J. Foreman. "Crystal structure of a layered coordination polymer based on a 44net containing Cd2+ions and 1,5-bis(pyridin-4-yl)pentane linkers." Acta Crystallographica Section E Structure Reports Online 70, no. 8 (2014): 80–83. http://dx.doi.org/10.1107/s1600536814014779.

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The title compound, poly[[diaquabis[1,5-bis(pyridin-4-yl)pentane-κ2N:N′]cadmium] bis(perchlorate) 1,5-bis(pyridin-4-yl)pentane ethanol monosolvate], [Cd(C15H18N2)2(H2O)2](ClO4)2·C15H18N2·C2H6O, is a layered coordination polymer built up from highly squashed 44nets in which the octahedraltrans-CdO2N4nodes (Cd site symmetry -1) are linked by the bifunctional ligands, forming infinite (110) sheets. The cationic sheets are charge-balanced by interlayer perchlorate ions. A free 1,5-bis(pyridin-4-yl)pentane molecule and an ethanol molecule of crystallization are also found in the intersheet region. A number of O—H...O, O—H...N and C—H...O hydrogen bonds help to consolidate the layered structure.

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Wang, Hai-Dong, Yi-Li Zhou, Hong-Yin He, Xiao-Hua Tu та Long-Guan Zhu. "μ-Oxalato-bis[(N,N′-dimethylformamide)(1,10-phenanthroline)copper(II)] bis(perchlorate)". Acta Crystallographica Section E Structure Reports Online 62, № 5 (2006): m1081—m1082. http://dx.doi.org/10.1107/s1600536806013547.

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The title centrosymmetric binuclear complex, [Cu2(C2O4)(C12H8N2)2(C3H7NO)2](ClO4)2, was synthesized by the reaction of 1,10-phenanthroline, 2,5-dihydroxy-1,4-dithiane and Cu(ClO4)2·6H2O. In the asymmetric unit, the CuII atom is in a distorted square-pyramidal coordination geometry. The closest Cu...O distance involving the perchlorate anion is 2.745 (2) Å.

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42

Wang, Hong Sheng, and Hai Feng Suo. "Synthesis and Structure of a Two-Dimensional Metal-Organic Framework: [Fe(C₇H₃NO₄)(H₂O)₂]_n." Advanced Materials Research 790 (September 2013): 33–36. http://dx.doi.org/10.4028/www.scientific.net/amr.790.33.

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A two-dimensional coordination polymer [Fe (C7H3NO4)(H2O)2]n was prepared with pyridine-2,3,5-tricarboxylic acid (H3pta) and iron (II) perchlorate at hydrothermal condition. Pyridine-2,3,5-tricarboxylic acid was decomposed to form the organic ligand of pyridine-3,5-dicarboxylate anion appeared in 1. Its crystal structure was determined by single crystal X-ray diffraction. The complex belongs to monoclinic crystal system, C2/c space group with a = 0.9945(2) nm, b = 1.2067(3) nm, c = 0.74125(15) nm, α = γ = 90°, β = 105.859(3)°, V = 0.8557(3) nm3, Z = 4, D =1.995 Mg/ m3. The Fe (II) ion is five-coordinated by one nitrogen atom and four oxygen atoms. Furthermore, each Fe (II) ion bond with two other oxygen atoms on carboxyl groups by weak coordination action. The five coordination atoms form a distorted trigonal bipyramid coordination geometry. These coordination geometries are interlinked into a 2D alveolate net structure. The 2D layers are further connected into a 3D coordination polymer by hydrogen bonds.

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Xu, Qiang, Zhaodong Wang, Jiahong He та ін. "Diaqua[μ-11,23-di-tert-butyl-3,7,15,19-tetraazatricyclo[19.3.1.19,13]tetracosa-1(25),2,6,9,11,13(26),14,19,21,23-dodecaene-25,26-diolato-κ4N3,N7,O25,O26:κ4N15,N19,O25,O26]dicopper(II) bis(perchlorate)". Acta Crystallographica Section E Structure Reports Online 68, № 8 (2012): m1060—m1061. http://dx.doi.org/10.1107/s1600536812031248.

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In the dinuclear title complex, [Cu2(C30H38N4O2)(H2O)2](ClO4)2, the coordination cation has crystallographically imposed twofold rotational symmetry. The CuIIion is five-coordinated by two N and two O atoms from the macrocylic ligand and one O atom from a water molecule, forming a square-pyramidal N2O3geometry with the water molecule in the apical position. The distance between the two CuIIatoms is 3.0930 (5) Å. Hydrogen bonds between water molecules and between water molecules and perchlorate anions assemble two cations and four anions into discrete supermolecules ofS4symmetry. Intramolecular O—H...N hydrogen bonds are also observed. The perchlorate anion and thetert-butyl group are disordered over two positions, with occupancies of the major positions of 0.527 (11) and 0.592 (9), respectively.

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Dieck, Heindirk tom, та Lutz Stamp. "Kupfer(I)-Komplexe mit ungesättigten Stickstoffliganden, V / Kupfer(I)-Komplexe mit Diazadienen als Chelate und Brücken: Röntgenstrukturenuntersuchungen an (DAD)Cu(μ-Cl)2Cu(DAD), [(DAD)2Cu]⁺ (CuCl2)-, (DAD)CuCl, [μ-(DAD)2Cu5Cl5]n und [μ-(DAD)Cu(OTf)]n (DAD = Diazadien) / Copper(I) Complexes with Unsaturated Nitrogen Ligands, V Copper(I) Complexes with Chelating and Bridging Diazadienes: X-Ray Diffraction Studies of (DAD)Cu(μ-Cl)2Cu(DAD), [(DAD)2Cu]+ (CuCl2)-, (DAD)CuCl, [μ-(DAD)2Cu5Cl5]n and [μ-(DAD)Cu(OTf)]n (DAD = Diazadiene)". Zeitschrift für Naturforschung B 45, № 10 (1990): 1369–82. http://dx.doi.org/10.1515/znb-1990-1005.

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Diazadienes RN = CR′-CR′ = NR (DAD) form molecular complexes with copper(I) halides of composition (DAD)CuX, the structures of which vary from [(DAD)2Cu]+(CuCl2)⁻ with a non-tetrahedral bis(chelated) cation, over [(DAD)CuCl]2 with asymmetrically bridging chloro ligands to planar three-coordinate (DAD)CuCl. The composition of the isolated complexes depends on the relative concentrations or on the solvent. The “soft” coordination geometry of copper is underlined by the structure of the coordination polymer of composition (DAD)2Cu5Cl5, in which Cu atoms of coordination number 2, 3 and 4 and very irregular geometries are encountered and where the DAD ligands are exclusively bridging. Halide ions and sp2-nitrogen donors are very competitive. Bridging DAD ligands are also encountered in (DAD)Cu-Y with the less nucleophilic anions trifluoromethane-sulphonate or perchlorate. Crystal and molecular structures are established for all these coordination geometries and the causes are discussed for the coordination flexibility of copper(I)

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Fuchs, Stefan, José M. López-de-Luzuriaga, M. Elena Olmos, Alexander Sladek, and Hubert Schmidbaur. "Gold Coordination by a Tertiary Phosphine with Three Thioether Functions." Zeitschrift für Naturforschung B 52, no. 2 (1997): 217–20. http://dx.doi.org/10.1515/znb-1997-0213.

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Abstract The reaction of tris(phenylthiomethyl)phosphine with equimolecular amounts of [AuPPh3]+[BF4]- affords the complex (tris(phenylthiomethyl)phosphine)(triphenylphosphine)- gold(I) tetrafluoroborate 1 in good yield. The X-ray diffraction analysis of this product shows an unusual conformation with the three ChLSPh arms of the phosphine folded back towards the metal atom shielding the P-Au-P′ unit. The reaction of the same substrate with Bis(tetrahydrothiophene)gold(I) perchlorate in a 1:1 molar ratio leads to the displacement of both weakly coordinated tht ligands, and a dimeric product [AuP(CH2SPh)3]2(ClO4)2 2 is obtained.

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G., Ajithkumar, and K. Radhakrishnan P. "Yttrium and lanthanide perchlorate complexes of 2,3-dimethyl-4-formyl- [2' -(aminomethyl)pyridine]-1-phenyl-3-pyrazoline-5-one and 2,3-dimethyl-4-formyl(benzhydrazide)-1-phenyl-3-pyrazolin-5-one." Journal of Indian Chemical Society Vol. 87, Mar 2010 (2010): 253–60. https://doi.org/10.5281/zenodo.5778455.

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School of Chemical Sciences, Mahatma Gandhi University, Kottayam-686 560, Kerala, India E-mail : pkrkn@yahoo.co.in Manuscript received 12 January 2009, revised 20 July 2009, accepted 20 August 2009 Two series or complexes of two Schiff bases, 2,3-dimethyl-4-formyl-[2'-(aminomethyl)pyridine]-1-phenyl-3- pyrazolin-5-one (L1) and 2,3-dimethyl-4-formyl(benzhydrazlde)-1-phenyl-3-pyrazolin-5-one (L2), with the general compositions [Ln(L1)2(CIO,V2](CIO4) and [Ln(L2}2(CIO4)](CIO4)2 (where Ln = Y, La, Pr, Nd, Sm, Eu, Gd, Dy, Ho or Er) have been synthesized and characterized, Both L1 and L2 are neutral ligands coordinating through the carbonyl oxygen(s) and the azomethine nitrogen In these complexes. Two perchlorate ions are bidentately coordinated in the complexes of L1 and one perchlorate ion is bidentately coordinated in the complexes or L2. A coordination number or eight is assigned to the metal In both series or complexes.

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Brandt, Willi, Joachim Wirbser, Anne K. Powell, and Heinrich Vahrenkamp. "Zinkkomplexe des Liganden Tris(methylaminomethyl)-ethan / Zinc Complexes of the Ligand Tris(methylaminomethyl)ethane." Zeitschrift für Naturforschung B 46, no. 4 (1991): 440–48. http://dx.doi.org/10.1515/znb-1991-0404.

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The title ligand CH3C(CH2—NHCH3)3 was used to prepare complexes with zinc salts. In addition to the known 1:1 complexes of ZnCl2 and ZnBr2, those of ZnI2, Zn(SCN)2, Zn(CH3COO)2, and Zn(NO3)2, and the bis-ligand complex of Zn(ClO4)2 were obtained and characterized. Crystal structure determinations revealed a tetrahedral coordination with two nitrogen atoms of the ligand and two anions bound to zinc for the acetate complex and for the thiocyanate complex, upon crystallization of which the ligand was converted to an acetone aminal. In the bis-ligand zinc perchlorate complex the ligand is tridentate, and zinc has an octahedral coordination.

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Johansson, Georg, Lauri Niinistö, Hisanobu Wakita, Markku Leskelä, and Eberhard Hoyer. "Coordination of the Trivalent Lanthanoids in Aqueous Selenate and Perchlorate Solutions." Acta Chemica Scandinavica 39a (1985): 359–61. http://dx.doi.org/10.3891/acta.chem.scand.39a-0359.

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49

Johansson, Georg, Mauro Magini, and Hitoshi Ohtaki. "Coordination around thorium(IV) in aqueous perchlorate, chloride and nitrate solutions." Journal of Solution Chemistry 20, no. 8 (1991): 775–92. http://dx.doi.org/10.1007/bf00675110.

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May, Nóra V., Niloofar Bayat, Kende Attila Béres, et al. "Structure and Vibrational Spectra of Pyridine Solvated Solid Bis(Pyridinesilver(I) Perchlorate, [Agpy2ClO4]·0.5py." Inorganics 10, no. 9 (2022): 123. http://dx.doi.org/10.3390/inorganics10090123.

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A hemipyridine solvate of bis(pyridine)silver(I) perchlorate, [Agpy2ClO4]·0.5py (compound 1) was prepared and characterized by single crystal X-ray analysis and vibrational spectroscopy (R and low-temperature Raman). Compound 1 was prepared via the trituration of [Agpy2ClO4] and 4[Agpy2ClO4]·[Agpy4]ClO4 (as the source of the solvate pyridine) in a mixed solvent of acetone:benzene =1:1 (v = v) at room temperature. The monoclinic crystals of compound 1 were found to be isomorphic with the analogous permanganate complex (a = 19.1093(16) Å, b = 7.7016(8) Å, c = 20.6915(19) Å, β = 105.515(7)°; space group: C2/c). Two [Agpy2]+ cations formed a dimeric unit [Agpy2ClO4]2, and each silver ion was connected to two ClO4- anions via oxygen atoms. The Ag∙∙∙Ag distance was 3.3873(5) Å, the perchlorate ions were coordinated to silver ions, and the Ag∙∙∙O distances were 2.840(2) Å and 2.8749(16) Å in the centrosymmetric rectangle of Ag-O-Ag-O. The stoichiometric ratio of the monomer [Agpy2ClO4] and the solvent pyridine was 1:0.5. The guest pyridine occupied 527.2 Å3, which was 18.0% of the volume of the unit cell. There was no additional residual solvent-accessible void in the crystal lattice. The solvate pyridine was connected via its a-CH to one of the O atoms of the perchlorate anion. Correlation analysis, as well as IR and low-temperature Raman studies, were performed to assign all perchlorate and pyridine vibrational modes. The solvate and coordinated pyridine bands in the IR and Raman spectra were not distinguishable. A perchlorate contribution via Ag-O coordination to low-frequency Raman bands was also assigned.

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Journal articles on the topic 'Perchlorate coordination'

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