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Journal articles on the topic 'Pseudotetrahedral coordination'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Böhme, Michael, Sven Ziegenbalg, Azar Aliabadi, Alexander Schnegg, Helmar Görls, and Winfried Plass. "Correction: Magnetic relaxation in cobalt(ii)-based single-ion magnets influenced by distortion of the pseudotetrahedral [N2O2] coordination environment." Dalton Transactions 48, no. 29 (2019): 11142–43. http://dx.doi.org/10.1039/c9dt90143d.

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Correction for ‘Magnetic relaxation in cobalt(ii)-based single-ion magnets influenced by distortion of the pseudotetrahedral [N<sub>2</sub>O<sub>2</sub>] coordination environment’ by Michael Böhme et al., Dalton Trans., 2018, 47, 10861–10873.

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2

Chattopadhyay, Swarup, Tapash Deb, Jeffrey L. Petersen, Victor G. Young, and Michael P. Jensen. "Steric Titration of Arylthiolate Coordination Modes at Pseudotetrahedral Nickel(II) Centers." Inorganic Chemistry 49, no. 2 (2010): 457–67. http://dx.doi.org/10.1021/ic901347p.

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3

Meneghetti, Mario Roberto, Mary Grellier, Michel Pfeffer, André De Cian, and Jean Fischer. "Pseudotetrahedral Organocobalt(III) Compounds Containing Specific Coordination Sites for Brønsted Acids." European Journal of Inorganic Chemistry 2000, no. 7 (2000): 1539–47. http://dx.doi.org/10.1002/1099-0682(200007)2000:7<1539::aid-ejic1539>3.0.co;2-1.

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4

Deacon, GB, BM Gatehouse, SN Platts та DL Wilkinson. "Organolanthanoids. XI. The Crystal and Molecular Structures of Two Tris(η5-cyclopentadienyl)(pyridine) lanthanoid(III) Compounds". Australian Journal of Chemistry 40, № 5 (1987): 907. http://dx.doi.org/10.1071/ch9870907.

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The crystal structures of tris (η5-cyclopentadienyl) (pyridine) samarium(III), monoclinic, space group P21/c, a 10.906(4), b 8.636(2), c 17.825(3) �, β 96.44(2)�, Z 4, R 0.027 and Rw 0.032 for 3619 'observed' reflections, and tris (η5-cyclopentadienyl)(pyridine)neodymium(III), monoclinic, space group P21 / c, a 14-206(4), b 8.619(2), c 15.190(7) �, β 107.38(2)�, Z 4, R 0.035 and R, 0.039 for 2677 'observed' reflections have been determined. Both compounds have pseudotetrahedral geometry with a coordination number of 10 for the lanthanoid metal but there is a difference in the coordination of p

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5

Bröring, Martin, Carsten D. Brandt, and Serguei Prikhodovski. "Synthetic and structural studies on metal complexes of tripyrrin." Journal of Porphyrins and Phthalocyanines 07, no. 01 (2003): 17–24. http://dx.doi.org/10.1142/s1088424603000045.

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A general two-step procedure for the synthesis of metallotripyrrinates TrpyMOAc f with M = Co(II) , Cu(II) , Zn(II) and Pd(II) , and OAc f = trifluoroacetate, is described, starting from well-known monopyrrolic precursors and simple transition metal acetates. X-ray structural investigations were undertaken on four different complexes, and the results reveal, that the nature of the metal ion, rather than the ligand, determines the coordination geometry of these porphyrin fragment complexes. The finding of pseudotetrahedral and strained pseudoplanar coordination polyhedra at the metal centres ma

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6

Holeček, Jaroslav, Karel Handlíř, Antonín Lyčka, T. K. Chattopadhyay, B. Majee, and A. K. Kumar. "Preparation and infrared and 13C, 17O, and 119Sn NMR spectra of some substituted di- and tri(1-butyl)tin phenoxyacetates and phenylthioacetates." Collection of Czechoslovak Chemical Communications 51, no. 5 (1986): 1100–1111. http://dx.doi.org/10.1135/cccc19861100.

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The paper describes preparation and basic physical and chemical properties of a group of substituted di- and tri(1-butyl)tin(IV) phenoxyacetates and phenylthioacetates of the general formula (RxC6H5-xECH2CO2)nSn(1-C4H9)4-n, where R = H, 2-Cl, 4-Cl, 2-CH3, and 2-OCH3, E means oxygen or sulphur atoms, n = 1 or 2, and x = 1 or 2. From IR spectral data, 13C, 17O, and 119Sn NMR spectra, and from other physico-chemical methods, conclusions are drawn about structure of the compounds in solid state and in solutions of coordinating (hexamethylphosphoric triamide) and non-coordinating solvents (chlorofo

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7

Chattopadhyay, Swarup, Tapash Deb, Huaibo Ma, Jeffrey L. Petersen, Victor G. Young, and Michael P. Jensen. "Arylthiolate Coordination and Reactivity at Pseudotetrahedral Nickel(II) Centers: Modulation by Noncovalent Interactions." Inorganic Chemistry 47, no. 8 (2008): 3384–92. http://dx.doi.org/10.1021/ic702417w.

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8

Burdukov, A. B., D. A. Guschin, N. V. Pervukhina, et al. "Mixed-ligand copper complexes with stable nitroxide — pseudotetrahedral tectons with the octahedral coordination core." Crystal Engineering 2, no. 4 (1999): 265–79. http://dx.doi.org/10.1016/s1463-0184(00)00022-8.

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9

Vlassa, Mihaela, Gheorghe Borodi, Cristian Silvestru, and Mircea Vlassa. "Hydrogen bonding-based 3D supramolecular architecture of [Cu(CHA)2][TCM]·11H2O." Open Chemistry 12, no. 1 (2014): 14–24. http://dx.doi.org/10.2478/s11532-013-0350-0.

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AbstractReaction of Na4TCM (1) (H4TCM = tetra[4-(carboxyphenyl)oxamethyl]methane) with [Cu(CHA)](ClO4)2 (2)(CHA = 1,3,6,8,11,14-hexaaz atricyclo[12.2.1.1.8,11] octadecane) in a DMF-water mixture yields [Cu(CHA)]2[TCM] (3). Structural analysis of [Cu(CHA)]2[TCM]·11H2O (3·11H2O) by single crystal X-ray diffraction reveals strong copper-oxygen bonds between two complex cations and the tetraanion leading to a 3D coordination network (zwitterionic structure), consolidated through additional NH...O=C hydrogen bonding within the cation/anion association. The resulting coordination geometry around a c

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10

Holeček, Jaroslav, Antonín Lyčka, David Micák, et al. "Infrared, 119Sn, 13C and 1H NMR, 119Sn and 13C CP/MAS NMR and Mössbauer Spectral Study of Some Tributylstannyl Citrates and Propane-1,2,3-tricarboxylates." Collection of Czechoslovak Chemical Communications 64, no. 6 (1999): 1028–48. http://dx.doi.org/10.1135/cccc19991028.

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Six tributylstannyl citrates and three tributylstannyl propane-1,2,3-tricarboxylates of the formula R1C(CH2COOR2)(COOR3)(CH2COOR4) (R1 = OH or H, R2, R3, R4 = H, Bu3Sn, C6H11NH3, (C6H11)2NH2 or (CH2)5NH2) have been synthesised, and their solution and solid-state structures studied by infrared, 1H, 13C and 119Sn NMR, 13C and 119Sn CP/MAS NMR and 119Sn Mössbauer spectroscopies. In non-coordinating solvents, the compounds exist as isolated molecules or ionic-pairs with their tin atoms in pseudotetrahedral environments. In coordinating solvents, the tin atoms in the compounds are five-coordinate o

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11

Ziegenbalg, Sven, David Hornig, Helmar Görls, and Winfried Plass. "Cobalt(II)-Based Single-Ion Magnets with Distorted Pseudotetrahedral [N2O2] Coordination: Experimental and Theoretical Investigations." Inorganic Chemistry 55, no. 8 (2016): 4047–58. http://dx.doi.org/10.1021/acs.inorgchem.6b00373.

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12

Stanila, Andreea, and Sorin Stanila. "Spectroscopic Studies of Aminoacids Complexes with Biometals." Chemistry Journal of Moldova 7, no. 1 (2012): 140–44. http://dx.doi.org/10.19261/cjm.2012.07(1).26.

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The [Cu(L)2]·H2O, [Co(L)2]·2H2O, [Zn(L)2]·H2O complexes with methionine (L) as ligand, were synthesized in water solution and analyzed by means of: elemental analysis, atomic absorption spectroscopy, thermogravimetry, FT-IR, UV-VIS and EPR spectroscopies. The atomic absorption spectroscopy and elemental measurements confi rm the ratio 1:2 metal ion: methionine composition for the synthesised compounds.The IR spectra show that amino acids act as bidentate ligands with coordination involving the carboxylic oxygen and the nitrogen atom of the amino group. Spectral UV-VIS data confi rmed the coval

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13

Roustan, Jean-Louis, Nasrin Ansari, Yvon Le Page, and Jean-Pierre Charland. "Molecular geometry of M(NO)2 complexes: single crystal X-ray structure of Co(NO)2(C5H5N)2+BF4−, lability of the pyridine ligands of Co(NO)2(C5H5N)2+, and its relevance to the formation of the Co2(NO)3+ bimetallic core." Canadian Journal of Chemistry 70, no. 6 (1992): 1650–57. http://dx.doi.org/10.1139/v92-206.

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The BPh4− and BF4− derivatives of Co(NO)2(Py)2+3 (Py = pyridine) have been prepared. In solution, whereas Co(NO)2(L)2+BPh4− (L = phosphane) and 3-BF4− are inert, 3-BPh4− decomposes rapidly in the absence of an excess of Py. Complex 3-BF4− crystallizes in the monoclinic system with two independent molecules, A and B, in the asymmetric unit, space group P21/a, a = 14.7633(6) Å, b = 13.9739(5) Å, c = 15.1667(6) Å, β = 109.334(4)°, 2225 reflections, R = 0.054, Rw = 0.023. The cobalt coordination polyhedron is a distorted tetrahedron. The comparison of the (O)N—Co—N(O) angles of 115.6(3)° (molecule

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14

Böhme, Michael, Sven Ziegenbalg, Azar Aliabadi, Alexander Schnegg, Helmar Görls, and Winfried Plass. "Magnetic relaxation in cobalt(ii)-based single-ion magnets influenced by distortion of the pseudotetrahedral [N2O2] coordination environment." Dalton Transactions 47, no. 32 (2018): 10861–73. http://dx.doi.org/10.1039/c8dt01530a.

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15

Chattopadhyay, Krishna, María José Heras Ojea, Arup Sarkar, Mark Murrie, Gopalan Rajaraman, and Debashis Ray. "Trapping of a Pseudotetrahedral CoIIO4 Core in Mixed-Valence Mixed-Geometry [Co5] Coordination Aggregates: Synthetic Marvel, Structures, and Magnetism." Inorganic Chemistry 57, no. 21 (2018): 13176–87. http://dx.doi.org/10.1021/acs.inorgchem.8b01577.

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16

Ehlert, Martin K., Steven J. Rettig, Alan Storr, Robert C. Thompson, and James Trotter. "Zinc 3,5-dimethylpyrazolate complexes: synthesis and structural studies. The crystal and molecular structure of [Zn2(dmpz)4(Hdmpz)2]." Canadian Journal of Chemistry 68, no. 9 (1990): 1494–98. http://dx.doi.org/10.1139/v90-229.

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Zinc metal reacts with excess 3,5-dimethylpyrazole (Hdmpz) in the presence of O2 to produce materials of composition Zn(dmpz)2(Hdmpz)y. Thermolysis of these materials results in the loss of Hdmpz and the formation of the [Zn(dmpz)2]x polymer. Under appropriate conditions the pure dimer [Zn2(dmpz)4(Hdmpz)2] can be obtained in high yield. Crystals of bis[μ-(3,5-dimethylpyrazolyl-N1,N2)]bis[(3,5-dimethylpyrazolyl)(3,5-dimethylpyrazole)zinc(II)] are orthorhombic, a = 17.009(2), b = 29.239(2), c = 13.590(2) Å, Z = 8, space group Fddd. The structure was solved by heavy atom methods and was refined b

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17

Navarro, Marta, Andrés Garcés, Luis F. Sánchez-Barba, Felipe de la Cruz-Martínez, Juan Fernández-Baeza, and Agustín Lara-Sánchez. "Efficient Bulky Organo-Zinc Scorpionates for the Stereoselective Production of Poly(rac-lactide)s." Polymers 13, no. 14 (2021): 2356. http://dx.doi.org/10.3390/polym13142356.

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The direct reaction of the highly sterically demanding acetamidinate-based NNN′-scorpionate protioligand Hphbptamd [Hphbptamd = N,N′-di-p-tolylbis(3,5-di-tertbutylpyrazole-1-yl)acetamidine] with one equiv. of ZnMe2 proceeds in high yield to the mononuclear alkyl zinc complex [ZnMe(κ3-phbptamd)] (1). Alternatively, the treatment of the corresponding lithium precursor [Li(phbptamd)(THF)] with ZnCl2 yielded the halide complex [ZnCl(κ3-phbptamd)] (2). The X-ray crystal structure of 1 confirmed unambiguously a mononuclear entity in these complexes, with the zinc centre arranged with a pseudotetrahe

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18

Takayama, Tomoaki, Jun Nakazawa, and Shiro Hikichi. "A pseudotetrahedral nickel(II) complex with a tridentate oxazoline-based scorpionate ligand: chlorido[tris(4,4-dimethyloxazolin-2-yl)phenylborato]nickel(II)." Acta Crystallographica Section C Structural Chemistry 72, no. 11 (2016): 842–45. http://dx.doi.org/10.1107/s2053229616012183.

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Poly(pyrazol-1-yl)borates have been utilized extensively in coordination compounds due to their high affinity toward cationic metal ions on the basis of electrostatic interactions derived from the mononegatively charged boron centre. The original poly(pyrazol-1-yl)borates, christened `scorpionates', were pioneered by the late Professor Swiatoslaw Trofimenko and have expanded to include various borate ligands with N-, P-, O-, S-, Se- and C-donors. Scorpionate ligands with boron–carbon bonds, rather than the normal boron–nitrogen bonds, have been developed and in these new types of scorpionate l

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19

Deb, Tapash, Caitlin M. Anderson, Swarup Chattopadhyay, Huaibo Ma, Victor G. Young, and Michael P. Jensen. "Steric and electronic effects on arylthiolate coordination in the pseudotetrahedral complexes [(TpPh,Me)Ni–SAr] (TpPh,Me= hydrotris{3-phenyl-5-methyl-1-pyrazolyl}borate)." Dalton Trans. 43, no. 46 (2014): 17489–99. http://dx.doi.org/10.1039/c4dt02726d.

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20

Bierbach, Ulrich, Wolfgang Saak, Detlev Haase, and Siegfried Pohl. "Thioharnstoff-Derivate als Liganden in Eisen-Komplexen: Synthese und Kristallstrukturen von [FeI2L2], [Fe2I4L3], (L -L)2+[FeI4-]2 (L = (Me2N )2CS) und [Fe2I4(C6H10(NH-CS -NHMe)2)2] mit einer Notiz zu [FeIL3]+[Fe4S4I3L]-/Thiourea Derivatives as Ligands in Iron Complexes: Syntheses and Crystal Structures of [FeI2L2], [Fe2I4L3], (L -L)2+[FeI4-]2 (L = (Me2N )2CS) and [Fe2I4(C6H10(NH-CS -NHMe)2)2] and a Note on[FeIL3]+[Fe4S4I3L]-." Zeitschrift für Naturforschung B 45, no. 1 (1990): 45–52. http://dx.doi.org/10.1515/znb-1990-0110.

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Abstract [FeI2L2] (1) and [Fe2I4L3] (2) are obtained from the reaction o f FeI2 and 1,1,3,3-tetramethylthiourea(L) in tetrahydrofuran solution. The Fe(III) complex [FeI3L] (3) and iodine react in dichloromethane to give (L-L )2+[FeI4-]2 (4). The bidentate thiourea derivative C6H10(NH - CS -NHMe)2 (5) reacts in acetonitrile solution with Fel2 producing the dinuclearcomplex [Fe2I4(C6H10(NH - CS -NHMe)2)2] (6).1 and 2 were obtained in nearly quantitative, 4 and 6 in good (ca. 87%) yield.The structures of 1, 2 ,4 and 6 were determined from single crystal X-ray diffraction data.1 crystallizes in th

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21

Lyčka, Antonín, Jaroslav Holeček, and David Micák. "119Sn, 13C and 1H NMR Spectra of Tris(1-butyl)stannyl D-Glucuronate." Collection of Czechoslovak Chemical Communications 62, no. 8 (1997): 1169–76. http://dx.doi.org/10.1135/cccc19971169.

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The 119Sn, 13C and 1H NMR spectra of tris(1-butyl)stannyl D-glucuronate have been measured in hexadeuteriodimethyl sulfoxide, tetradeuteriomethanol and deuteriochloroform. The chemical shift values have been assigned unambiguously with the help of H,H-COSY, TOCSY, H,C-COSY and 1H-13C HMQC-RELAY. From the analysis of parameters of 119Sn, 13C and 1H NMR spectra of the title compound and their comparison with the corresponding spectra of tris(1-butyl)stannyl acetate and other carboxylates it follows that in solutions of non-coordinating solvents (deuteriochloroform) the title compound is present

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22

Holeček, Jaroslav, Milan Nádvorník, Karel Handlíř, Vladimír Pejchal, Radovan Vítek, and Antonín Lyčka. "Synthesis and Infrared and 1H, 13C, 119Sn NMR Spectra of Some Tris- and Bis(1-butyl)tin(IV) Naphthoates and Hydroxynaphthoates." Collection of Czechoslovak Chemical Communications 62, no. 2 (1997): 279–98. http://dx.doi.org/10.1135/cccc19970279.

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The synthesis and structure of tris(1-butyl)tin(IV) and bis(1-butyl)tin(IV) 1-naphthoates, 2-naphthoates, 1-hydroxy-2-naphthoates, 2-hydroxy-1-naphthoates, 3-hydroxy-2-naphthoates as well as the groups of the corresponding tetrakis(1-butyl)dinaphthoato- and tetrakis(1-butyl)bis(hydroxynaphthoato)distannoxanes have been studied in solutions of both coordinating and noncoordinating solvents by means of infrared and multinuclear (1H, 13C and 119Sn) NMR spectroscopies. In the solutions of noncoordinating solvents, all the tris(1-butyl)tin(IV) compounds are present as isolated monomeric molecules w

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