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Journal articles on the topic 'Macrocycle; Coordination'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 February 2022

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1

Duckworth, PA, LF Lindoy, M. Mcpartlin, and PA Tasker. "New Macrocyclic Ligands. IV. Dibenzo-Substituted Rings Incorporating Five Donor Atoms. X-Ray Structures of an N4O-Donor Macrocycle, Its Protonated Form, and Its Complex With Barium Perchlorate." Australian Journal of Chemistry 46, no. 11 (1993): 1787. http://dx.doi.org/10.1071/ch9931787.

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The syntheses and characterization of four dibenzo-substituted macrocycles incorporating N5-, N4O-or N4S-donor sets are reported. The new systems extend the range of related (potentially pentadentate ) macrocyclic systems of this general structure reported previously. For the 17-membered macrocycle incorporating an N4O-donor set, X-ray structure determinations of the free ligand and its salt of type [LH]ClO4 confirm the structure of this compound predicted from physical measurements. The diperchloratobarium complex of this macrocycle is shown to have the barium nine-coordinate; the coordinatio

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2

Kallert, Uwe, and Rainer Mattes. "Komplexe 17-gliedriger Dibenzo-Makrocyclen mit N3O2- bzw. N3S2-Donorzentren Strukturen von [Zn(′N3O2′)Cl]2ZnCl4 und [Hg(′N3S2′)Br2] / Complexes of 17-Membered Dibenzo Macrocycles with N3O2 or N3S2 Donor Sets Crystal and Molecular Structures of [Zn(′N3O2′)Cl]2ZnCl4 and [Hg(′N3S2′)Br2]." Zeitschrift für Naturforschung B 47, no. 9 (1992): 1271–75. http://dx.doi.org/10.1515/znb-1992-0910.

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The macrocyclic complexes [Zn(′N3O2')Cl]2ZnCl4 (1) und [Hg(′N3S2')Br2] (2) have been prepared and their crystal structures determined. Zn(II) is incorporated into the macrocyclic cavity of the ′N3O2′ ligand and primarly coordinated to the three nitrogen donors of the macrocycle and to a chloride ion. Weaker interactions occur with the oxygen donors of the macrocycle. The Zn—O distances are 296,4(5) and 322,4(6) pm. In complex 2 Hg(II) lies outside the macrocyclic cavity. The donor set comprises two secondary amine nitrogen atoms and a thioether sulfur atom of the macrocycle, and two bromide an

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3

Wang, Li-Li, Yi-Kuan Tu, Huan Yao, and Wei Jiang. "2,3-Dibutoxynaphthalene-based tetralactam macrocycles for recognizing precious metal chloride complexes." Beilstein Journal of Organic Chemistry 15 (July 2, 2019): 1460–67. http://dx.doi.org/10.3762/bjoc.15.146.

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Two new tetralactam macrocycles with 2,3-dibutoxynaphthalene groups as sidewalls have been synthesized and characterized. The macrocycle containing isophthalamide bridges can bind square-planar chloride coordination complexes of gold(III), platinum(II), and palladium(II) in CDCl3, while the macrocycle with 2,6-pyridine dicarboxamide bridging units cannot. This may be due to the shrunken cavity caused by intramolecular hydrogen bonds in the latter tetralactam macrocycle. The binding of the isophthalamide-based macrocycle is mainly driven by hydrogen bonds and electrostatic interactions. This na

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4

Kang, Yunji, Hyeong-Hwan Lee, Huiyeong Ju, et al. "Endocyclic and Endo–Exocyclic Silver(I) Complexes of Thiaoxaaza Macrocycles: Crystallographic and NMR Studies." Australian Journal of Chemistry 70, no. 5 (2017): 456. http://dx.doi.org/10.1071/ch16467.

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A comparative investigation of the coordination behaviour of a 19-membered NO2S2-macrocycle (L1) and a 20-membered NO2S3-macrocycle (L2) is reported. On silver(i) complexation, L1 yields a discrete endocyclic mononuclear complex, whereas L2 affords a one-dimensional coordination polymer in which the endo-coordinated macrocyclic complex units are linked by silver(i) ions outside the cavity via endo–exo-coordination. The larger ring cavity along with the flexible nature of L2 may induce the weaker endocyclic complexation and contribute to exocyclic coordination as well. In NMR titration studies

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5

Soberanes, Yedith, Rosa Elena Navarro, Motomichi Inoue, et al. "Syntheses, Characterization, and Antioxidant Evaluation of Cu2+, Mn2+, and Fe3+ Complexes with a 14 Membered EDTA-Derived Macrocycle." Molecules 24, no. 19 (2019): 3556. http://dx.doi.org/10.3390/molecules24193556.

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The Cu2+, Mn2+, and Fe3+ complexes of a 14 membered macrocycle were synthesized and their antioxidant capacities were evaluated against ABTS and DPPH radicals, with the objective of collecting insights into the biomimetic role of the central metal ions. The macrocycle, abbreviated as H2L14, is a derivative of EDTA cyclized with 1,4-diamine, and the moderately flexible macrocyclic frame permits the formation of [ML14·H2O] chelates with octahedral coordination geometries common among the metal ions. The metal complexes were characterized by electrospray-ionization mass spectrometry, Fourier tran

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6

Sazanovich, Igor V., Dmitry B. Berezin, Arie van Hoek, et al. "The photophysical and metal coordination properties of the N-CH3 substituted porphyrins: H(N-CH3) TPP vs H(N-CH3)OEP." Journal of Porphyrins and Phthalocyanines 09, no. 01 (2005): 59–67. http://dx.doi.org/10.1142/s1088424605000113.

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The effect of N -methyl substitution on photophysical and metal coordination properties of the respective derivatives of octaethylporphyrin ( H 2 OEP ) and tetraphenylporphyrin ( H 2 TPP ) was studied by means of steady-state and time-resolved optical spectroscopies combined with semi-empirical quantum-chemical calculations and coordination chemistry methods. In case of H 2 TPP , the insertion of the methyl substituent into the center of the porphyrin macrocycle leads to noticeable nonplanar distortions of the molecule and is accompanied by changes of its photophysical and physicochemical prop

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7

Jordan, Ronja, and Doris Kunz. "The Fascinating Flexibility and Coordination Modes of a Pentamethylene Connected Macrocyclic CNC Pincer Ligand." Molecules 26, no. 6 (2021): 1669. http://dx.doi.org/10.3390/molecules26061669.

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The coordination chemistry of an electron-rich macrocyclic CNC pincer-ligand consisting of two pentamethylene tethered N-heterocyclic carbene moieties on a carbazole backbone (bimcaC5) is investigated by mainly NMR spectroscopy and X-ray crystal structure analysis. A bridging coordination mode is found for the lithium complex. With the larger and softer potassium ion, the ligand adopts a facial coordination mode and a polymeric structure by intermolecular potassium nitrogen interactions. The facial coordination is also confirmed at a Cp*Ru fragment, while C-H activation under dehydrogenation a

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8

Carta, Veronica, Miguel A. Soto, and Mark J. MacLachlan. "Ligand-modulated ring-expansion." Chemical Communications 55, no. 9 (2019): 1245–48. http://dx.doi.org/10.1039/c8cc09710k.

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An unstrained metal-containing macrocycle was ring-expanded by a ring-opening metathesis strategy, leading to the formation of a bimetallic dimeric macrocycle. The reaction is driven by coordination of a bulky ligand, 2,6-lutidine, on the fourth coordination site of the palladium center. In the absence of metal, or with a less bulky ligand, the ring-expansion reaction does not proceed.

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9

Nunes, Marcelo Carpes, Marcos Antonio Ribeiro, and Fábio Souza Nunes. "New Copper and Oxomolybdate Robson-Type Polynuclear Macrocyclic Complexes: Structure, Spectroscopy, and Electrochemical Properties." Journal of Chemistry 2015 (2015): 1–9. http://dx.doi.org/10.1155/2015/506932.

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The polynuclear complexes [Mo3O8(tidf)]·dmso·2H2O (1) and [{Cu2(tidf)}2(μ-Mo8O24)] (2) (tidf2−is a symmetrical tetraiminodiphenolate Robson-type macrocyclic ligand) were prepared from equimolar combinations of [Mg2(tidf)](NO3)2·4H2O, [MoO2Cl2(dmso)2] (for1) and complex1and Cu(ClO4)2·4H2O (for2) in acetonitrile. Molecular structures of both complexes were determined and showed atypical modes of coordination. A significant observation was the remarkable flexibility of the macrocycle ligand that effectively accommodated the steric demands of metal cations and the packing forces and showed a uniqu

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10

Lodeiro, Carlos, Rufina Bastida, Emilia Bértolo, and Adolfo Rodríguez. "A new family of NxOy pyridine-containing macrocycles: Synthesis and characterization of their Y(III), Ln(III), Zn(II), and Cd(II) coordination compounds." Canadian Journal of Chemistry 82, no. 3 (2004): 437–47. http://dx.doi.org/10.1139/v03-214.

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Reaction between 2,6-bis(2-formylphenoxymethyl)pyridine and N,N-bis(3-aminopropyl)methylamine or tris(2-aminoethyl)amine has been used as the starting point for the synthesis of seven oxa-aza macrocyclic ligands, five of them never reported previously. They all feature different pendant arms, which provide a wide range of coordination possibilities. The Schiff base macrocycles L1 and L4 and their reduced ligands L2 and L5 are derived from 2,6-bis(2-formylphenoxymethyl)pyridine and tris(2-aminoethyl)amine or N,N-bis(3-aminopropyl)methylamine, respectively. The reaction of L1 with salicylaldehyd

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11

Shanmugaraju, Sankarasekaran, Dipak Samanta, and Partha Sarathi Mukherjee. "Self-assembly of Ru4 and Ru8 assemblies by coordination using organometallic Ru(II)2 precursors: Synthesis, characterization and properties." Beilstein Journal of Organic Chemistry 8 (February 28, 2012): 313–22. http://dx.doi.org/10.3762/bjoc.8.34.

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Coordination-driven self-assembly of binuclear half-sandwich p-cymene ruthenium(II) complexes [Ru2(μ-η4-C2O4)(MeOH)2(η6-p-cymene)2](O3SCF3)2 (1a) or [Ru2(μ-η4-N,N'-diphenyloxamidato)(MeOH)2(η6-p-cymene)2](O3SCF3)2 (1b) separately with an imidazole-based tetratopic donor L in methanol affords two tetranuclear metallamacrocycles 2a and 2b, respectively. Conversely, the similar combination of L with 2,5-dihydroxy-1,4-benzoquinonato (dhbq) bridged binuclear complex [Ru2(μ-η4-C6H2O4)(MeOH)2(η6-p-cymene)2](O3SCF3)2 (1c) in 1:2 molar ratio resulted in an octanuclear macrocyclic cage 2c. All the self-

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12

Fonari, Marina S., Eduard V. Ganin, Vladimir O. Gelmboldt, Janusz Lipkowski, Sergei A. Kotlyar, and Gerbert L. Kamalov. "The 1:1 adduct of antimony trifluoride with [1.5]dibenzothia-18-crown-6." Acta Crystallographica Section E Structure Reports Online 62, no. 5 (2006): m1021—m1023. http://dx.doi.org/10.1107/s1600536806012451.

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In the title compound [systematic name: 6,7,9,10,12,13,15,16-octahydrodibenzo[n,q][1,4,7,10,13,16]pentaoxathiacyclooctadecine antimony(III) trifluoride clathrate], (C20H24O5S)SbF3], the components are held together via electrostatic interactions between the antimony lone pair and the collective electron system of the macrocycle. The antimony trifluoride molecule is situated in a perching mode above the macrocyclic cavity, its coordination being completed by three crown ether O atoms at distances in the range 2.737 (1)–3.136 (1) Å. Neighboring 1:1 adducts are linked into chains via C—H...F hydr

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13

Vargas-Zúñiga, Gabriela I., Vladimir V. Roznyatovskiy, Alexander Nepomnyaschii, Vincent M. Lynch та Jonathan L. Sessler. "π-Metal complexes of i-propyldinaphthoporphycene". Journal of Porphyrins and Phthalocyanines 16, № 05n06 (2012): 479–87. http://dx.doi.org/10.1142/s1088424612500472.

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The synthesis and characterization of four metalloporphycenes containing a [MCp*]+ (Cp* = pentamethylcyclopentadiene; M = Rh , Ir , and Ru ) fragment directly bonded to the π-framework of the macrocycle were obtained. The electrochemical and optical properties of these complexes, studied in their respective free-base forms, revealed that the electron acceptor properties of the macrocycle can be enhanced by the coordination of an organometallic fragment to the π-electron face. In the case of the "fused" ruthenocene adduct, the corresponding nickel complex was also prepared. Here, less electroni

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14

Caricato, Marco, Arnaud Delforge, Davide Bonifazi, Daniele Dondi, Andrea Mazzanti, and Dario Pasini. "Chiral nanostructuring of multivalent macrocycles in solution and on surfaces." Organic & Biomolecular Chemistry 13, no. 12 (2015): 3593–601. http://dx.doi.org/10.1039/c4ob02643h.

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15

Kim, Seulgi, In-Hyeok Park, Han-Byeol Choi, et al. "Formation of a four-bladed waterwheel-type chloro-bridged dicopper(ii) complex with dithiamacrocycle via double exo-coordination." Dalton Transactions 49, no. 5 (2020): 1365–69. http://dx.doi.org/10.1039/c9dt04372a.

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A four-bladed waterwheel-like chloro-bridged dicopper(ii) complex! The self-assembly of O<sub>3</sub>S<sub>2</sub>-macrocycle (L) with copper(ii) nitrate afforded a chloro-bridged tetra(macrocycle) dicopper(ii) complex.

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16

Qin, Yi, Li-Jun Chen, Ying Zhang, et al. "Photoswitchable Förster resonance energy transfer (FRET) within a heterometallic Ir–Pt macrocycle." Chemical Communications 55, no. 74 (2019): 11119–22. http://dx.doi.org/10.1039/c9cc05377h.

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17

Zakrzewski, Janusz, and Charles Giannotti. "Axial coordination of azaferrocene to transition metal macrocyclic complexes: photoactivation of the macrocycle." Coordination Chemistry Reviews 140 (March 1995): 169–87. http://dx.doi.org/10.1016/0010-8545(94)01125-u.

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18

Ghanbari, Bahram, Leila Shahhoseini, Agata Owczarzak, Maciej Kubicki, Reza Kia, and Paul R. Raithby. "Synthesis, X-ray crystallography, thermogravimetric analysis and spectroscopic characterization of isostructural one-dimensional coordination polymers as sorbents for some anions." CrystEngComm 20, no. 13 (2018): 1783–96. http://dx.doi.org/10.1039/c7ce02017a.

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19

Bao, Zhe, Hong-Bo Zhao, Ning Qu, Georg Schreckenbach, and Qing-Jiang Pan. "Theoretical investigation of low-valent uranium and transuranium complexes of a flexible small-cavity macrocycle: structural, formation reaction and redox properties." Dalton Transactions 45, no. 40 (2016): 15970–82. http://dx.doi.org/10.1039/c6dt01930g.

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20

Białek, Michał J., and Lechosław Latos-Grażyński. "Aromaticity switching via azulene transformations in azulene-bridged A,D-dithiahexaphyrin." Chemical Communications 54, no. 15 (2018): 1837–40. http://dx.doi.org/10.1039/c7cc08754c.

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Two-electron reduction of azulene-bridged hexaphyrin affords an antiaromatic macrocycle. Alternatively, the intramolecular coordination-induced transformation of azulene yielded 18π-electron carbaporphyrins.

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21

Burgess, Michael G., M. Naveed Zafar, Stephen T. Horner, George R. Clark, and L. James Wright. "Controlled translocation of palladium(ii) within a 22 ring atom macrocyclic ligand." Dalton Trans. 43, no. 45 (2014): 17006–16. http://dx.doi.org/10.1039/c4dt00765d.

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Palladium can be directed to coordinate to the “tail” region of the macrocycle H4L to give 3b. Translocation of the palladium from the tail coordination pocket to the head coordination pocket occurs on treatment with amines such as n-BuNH<sub>2</sub> to give 4.

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22

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 ref

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23

Dekhtiarenko, Maksym, Serhii Krykun, Vincent Carré, et al. "Tuning the structure and the properties of dithiafulvene metalla-assembled tweezers." Organic Chemistry Frontiers 7, no. 15 (2020): 2040–46. http://dx.doi.org/10.1039/d0qo00641f.

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An electroactive M<sub>2</sub>L<sub>2</sub> metalla-macrocycle constructed through coordination driven self-assembly dimerizes upon oxidation and binds an electro-deficient substrate with a high association constant.

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24

Blake, Alexander J., Neil R. Champness, Steven M. Howdle, and Paul B. Webb. "Silver(I) Coordination Polymers Using Thioether Macrocycle Building Blocks." Inorganic Chemistry 39, no. 5 (2000): 1035–38. http://dx.doi.org/10.1021/ic991145d.

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25

Sessler, Jonathan L., Elisa Tomat, and Vincent M. Lynch. "Coordination of oxovanadium(v) in an expanded porphyrin macrocycle." Chemical Communications, no. 43 (2006): 4486. http://dx.doi.org/10.1039/b608143f.

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26

Andrew, Rhiann E., Dominic W. Ferdani, C. André Ohlin, and Adrian B. Chaplin. "Coordination Induced Atropisomerism in an NHC-Based Rhodium Macrocycle." Organometallics 34, no. 5 (2015): 913–17. http://dx.doi.org/10.1021/om501292k.

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27

Lee, Eunji, Huiyeong Ju, In-Hyeok Park, et al. "Mechanistic insights into heavy metal ion sensing by NOS2-macrocyclic fluorosensors via the structure-function relationship: influences of fluorophores, solvents and anions." Analyst 145, no. 5 (2020): 1667–76. http://dx.doi.org/10.1039/c9an02466b.

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The sensing properties of heavy metal ions by macrocycle-based fluorosensors are sensitive not only to cation–receptors and cation–fluorophore interactions but also to cation–anion (endo/exo-coordination modes) and/or cation–solvent interactions.

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28

He, Xin, Yang Xue, Cui-Cui Li, Yuechao Wang, Hong Jiang, and Liang Zhao. "Synthesis of stable polymetalated aromatic complexes through metal–macrocycle capsule-triggered cyclization." Chemical Science 9, no. 6 (2018): 1481–87. http://dx.doi.org/10.1039/c7sc04503d.

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A dynamic coordination capsule derived from coordination-driven molecular folding of a flexible macrocyclic ligand was applied to trigger cyclization reactions and encapsulate unprecedented polysilver complexes of four different heteroaromatics.

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29

ZAKRZEWSKI, J., and C. GIANNOTTI. "ChemInform Abstract: Axial Coordination of Azaferrocene to Transition-Metal Macrocyclic Complexes: Photoactivation of the Macrocycle." ChemInform 26, no. 32 (2010): no. http://dx.doi.org/10.1002/chin.199532272.

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30

Cuesta, Luciano, Vincent M. Lynch та Jonathan L. Sessler. "Syntheses and structural studies of η5-pentamethylcyclopentadienyl rhodium(III) and iridium(III) complexes of a Schiff-base expanded porphyrin". Journal of Porphyrins and Phthalocyanines 14, № 01 (2010): 41–46. http://dx.doi.org/10.1142/s1088424610001738.

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Reported here is the synthesis of new binuclear rhodium(III) and iridium(III) semi-sandwich complexes of a Schiff-base expanded porphyrin. Single crystals of these new complexes were subject to X-ray diffraction analysis. The resulting structures revealed that the Schiff-base macrocycle adopts a V-shape in which two {(η5- C 5 Me 5) MCl } ( M = Rh and Ir ) fragments are accommodated within the macrocyclic pocket. The coordination environment of the metal centers is typical to that of "piano stool"-type complexes. The X-ray analyses and complementary NMR studies (carried out in CD 2 Cl 2) provid

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Arnold, Polly L., Joy H. Farnaby, Rebecca C. White, Nikolas Kaltsoyannis, Michael G. Gardiner та Jason B. Love. "Switchable π-coordination and C–H metallation in small-cavity macrocyclic uranium and thorium complexes". Chem. Sci. 5, № 2 (2014): 756–65. http://dx.doi.org/10.1039/c3sc52072b.

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Kuvshinova, Elizaveta M., Olga V. Gornukhina, Alexander S. Semeikin, Irina A. Vershinina, and Sergey A. Syrbu. "COORDINATION PROPERTIES OF NITRO-SUBSTITUTED 5,15-DIPHENYL-3,7,13,17-TETRAMETHYL-2,8,12,18-TETRAETHYLPORPHYRIN WITH MANGANESE ACETATE IN PYRIDINE AND ACETIC ACID." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 63, no. 9 (2020): 49–55. http://dx.doi.org/10.6060/ivkkt.20206309.6218.

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The synthesis of 5,15-diphenyl-3,7,13,17-tetramethyl-2,8,12,18-tetraethylporphyrin and its nitro substituted was carried out. Nitro groups are located in meso-positions of the tetrapyrrole macrocycle and (or) para-positions of the phenyl rings. The synthesized porphyrins are characterized by a set of modern research methods: electron absorption spectroscopy; IR and nuclear magnetic resonance spectroscopy 1H. The reactions of the formation of manganese complexes with nitro-substituted 5,15-diphenyl-3,7,13,17-tetramethyl-2,8,12,18-tetraethylporphyrin and their stability in organic solvents are s

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33

Négrerie, Michel. "Iron transitions during activation of allosteric heme proteins in cell signaling." Metallomics 11, no. 5 (2019): 868–93. http://dx.doi.org/10.1039/c8mt00337h.

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Allosteric heme proteins can fulfill a very large number of different functions, thanks to the remarkable chemical versatility of the heme through the entire living kingdom. The involved heme properties include: changes of iron coordination and redox state, heme macrocycle electrostatic interactions and heme distortion.

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Dogutan, Dilek K., D. Kwabena Bediako, Daniel J. Graham, Christopher M. Lemon, and Daniel G. Nocera. "Proton-coupled electron transfer chemistry of hangman macrocycles: Hydrogen and oxygen evolution reactions." Journal of Porphyrins and Phthalocyanines 19, no. 01-03 (2015): 1–8. http://dx.doi.org/10.1142/s1088424614501016.

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The splitting of water into its constituent elements is an important solar fuels conversion reaction for the storage of renewable energy. For each of the half reactions of the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), multiple protons and electrons must be coupled to avoid high-energy intermediates. To understand the mechanistic details of the PCET chemistry that underpins HER and OER, we have designed hangman porphyrin and corrole catalysts. In these hangman constructs, a pendant acid/base functionality within the secondary coordination sphere is "hung" above the

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35

Habermehl, Nicolle C., Fabian Mohr, Dana J. Eisler, Michael C. Jennings, and Richard J. Puddephatt. "Organogold(I) macrocycles and [2]catenanes containing pyridyl and bipyridyl substituents Organometallic catenanes as ligands." Canadian Journal of Chemistry 84, no. 2 (2006): 111–23. http://dx.doi.org/10.1139/v05-229.

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The synthesis of achiral gold(I) macrocycles [RCH(4-C6H4OCH2C≡CAu)2(µ-Ph2PZPPh2)] and the corresponding chiral gold(I) [2]catenanes, bearing substituents R = 2-pyridyl, 4-pyridyl, and 4-(2,2′-bipyridyl), is reported. The gold(I) compounds form by self-assembly on reaction of oligomeric digold(I) diacetylides [{RCH(4-C6H4OCH2C≡CAu)2}n] or the isocyanide complexes [RCH(4-C6H4OCH2C≡CAuC≡N-t-Bu)2] with diphosphine ligands Ph2PZPPh2, Z = CC or (CH2)n with n = 25, or on reaction of [Au2(O2CCF3)2(µ-Ph2PZPPh2)] with diacetylenes RCH(4-C6H4OCH2C≡CH)2 in the presence of a base. The equilibrium between

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36

Pedrick, Elizabeth A., Mikiyas K. Assefa, Megan E. Wakefield, Guang Wu, and Trevor W. Hayton. "Uranyl Coordination by the 14-Membered Macrocycle Dibenzotetramethyltetraaza[14]annulene." Inorganic Chemistry 56, no. 11 (2017): 6638–44. http://dx.doi.org/10.1021/acs.inorgchem.7b00700.

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37

Rusanova, Julia A., Philip J. Squattrito, Vera V. Ponomareva, Konstantin V. Domasevitch, and Volodimir N. Kokozay. "Wrap-around Encapsulated Cs(dibenzo-24-crown-8)+ Cations form Linear Coordination Polymers with Dicyanoargentate Anions Ag(CN)2-." Zeitschrift für Naturforschung B 54, no. 9 (1999): 1129–32. http://dx.doi.org/10.1515/znb-1999-0907.

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The new macrocyclic dicyanoargentate complex Cs(dibenzo-24-crown-8)[Ag(CN)2] has been prepared and studied by means of X-ray diffraction (monoclinic, space group P21/a, with a = 12.730(3), b = 15.443(3), c = 15.323(3) Å, V = 3005(1) Å3, Z = 4, R1 = 0.041; wR2 = 0.048 for 5488 unique reflections with I > 3σ(I)). The lattice consists of complex Cs(db- 24-crown-8)+ cations (as an example of the “wrap-around” structure) and [Ag(CN)2]- anions forming a one-dimensional polymeric structure. The caesium atoms are coordinated with 8 oxygen atoms of the macrocycle and two nitrogen atoms of the dicyan

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38

Jin, Guoxia, Yuqi Ji, Teng Wang, et al. "Syntheses and characterization of dinuclear and tetranuclear AgI supramolecular complexes generated from symmetric and asymmetric molecular clips containing oxadiazole rings." Acta Crystallographica Section C Structural Chemistry 75, no. 10 (2019): 1327–35. http://dx.doi.org/10.1107/s2053229619011744.

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A new asymmetric ligand, 5-{3-[5-(4-methylphenyl)-1,3,4-oxadiazol-2-yl]phenyl}-2-(pyridin-3-yl)-1,3,4-oxadiazole (L5), which contains two oxadiazole rings, was synthesized and characterized. The assembly of symmetric 2,5-bis(pyridin-3-yl)-1,3,4-oxadiazole (L1) and asymmetric L5 with AgCO2CF3 in solution yielded two novel AgI complexes, namely catena-poly[[di-μ-trifluoroacetato-disilver(I)]-bis[μ-2,5-bis(pyridin-3-yl)-1,3,4-oxadiazole]], [Ag2(C2F3O2)2(C12H8N4O)2] n or [Ag2(μ2-O2CCF3)2(L1)2] n (1), and bis(μ3-5-{3-[5-(4-methylphenyl)-1,3,4-oxadiazol-2-yl]phenyl}-2-(pyridin-3-yl)-1,3,4-oxadiazole

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39

Donzello, Maria Pia, Elisa Viola, Luisa Mannina, Mario Barteri, Zhen Fu, and Claudio Ercolani. "Tetra-2,3-pyrazinoporphyrazines with externally appended pyridine rings: 11 Photoactivity of a new Pt(II) pentanuclear macrocycle bearing four cisplatin-like functionalities and its related monoplatinated species." Journal of Porphyrins and Phthalocyanines 15, no. 09n10 (2011): 984–94. http://dx.doi.org/10.1142/s1088424611004014.

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The pentanuclear PtII porphyrazine compound [(PtCl2)4LPt] (L = tetrakis-2,3-[5,6-di(2-pyridyl)pyrazino]porphyrazinato dianion), the mononuclear species [LPt] and the octacation [L′Pt]8+ (neutralized by I- ions; L′ = L octaquaternized at the pyridine N atoms) were synthesized and characterized by IR/UV-visible spectral measurements. 1H and 13C NMR spectral data on [(PtCl2)4 LPt] indicate that the four PtCl2 units are coordinated at the pyridine N atoms of the peripheral dipyridinopyrazine fragments ("py–py" coordination) and the largely prevalent conformational arrangement of the entire macrocy

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40

Ivanova, Svetlana S., and Pavel A. Stuzhin. "Indium(III) complexes of octaphenylporphyrazine: Effect of halide coordination on the basic properties and stability in acid media." Journal of Porphyrins and Phthalocyanines 15, no. 11n12 (2011): 1299–309. http://dx.doi.org/10.1142/s108842461100421x.

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Influence of halide ion coordination on the basic properties and stability of indium(III) octaphenylporphyrazine complexes in acid medium have been studied. Five-coordinated halide complexes [(Hal)InPAPh8] (Hal = F, Cl, Br) are stable in dichloromethane or chloroform solutions acidified with trifluoroacetic acid up to 100%. One of four meso-nitrogen atoms is protonated in 0.1 M solution; their basicity depending of the ionic character of In–Hal bond is decreased in the order F > Cl > Br . Addition of an excess of fluoride, chloride or bromide anions leads to formation of anionic cis-diha

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41

Oba, Toru, and Hitoshi Tamiaki. "Asymmetry of chlorophylls in photosynthetic proteins: from the viewpoint of coordination chemistry." Journal of Porphyrins and Phthalocyanines 18, no. 10n11 (2014): 919–32. http://dx.doi.org/10.1142/s1088424614500710.

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We conducted a meta-analysis of (bacterio)chlorophyll [(B)Chl] molecules in photosynthetic pigment-protein complexes from the viewpoint of coordination chemistry. We surveyed the ligand species and site in the axial coordination of 146 Chl and 21 BChl molecules in 42 reported crystal structures of 12-type proteins. The imidazolyl moiety of histidine (His) is the most abundant ligand, and the second is water, a much weaker ligand. We focused on the positions, the circumstances, and the macrocycle sides for the coordination of the 31 hydrated (B)Chl molecules found in these proteins. A ligand wa

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42

Zibaseresht, Ramin, Alan M. Downward, and Richard M. Hartshorn. "Coordination Chemistry of Some Terpyridyl-Polyamine Bridging Ligands." Australian Journal of Chemistry 63, no. 4 (2010): 669. http://dx.doi.org/10.1071/ch09478.

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A series of ditopic ligands bearing terpyridyl and polyamine coordination sites have been prepared. Complexes with RuII bound to the terpyridyl sites of many of these ligands have been prepared. RuII complexes of these ligands appear vulnerable to nucleophilic displacement of the polyamine portion of the ligand by BH4 –. A limited study of the coordination chemistry of the polyamine portion of the RuII complexes has been conducted, including the synthesis and characterization of RuII–CoIII heterodinuclear complexes in which the CoIII centre is coordinated by a cyclam macrocycle. The CoIII cent

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Park, In-Hyeok, Hyun Jee Kim, Huiyeong Ju, Eunji Lee, Seulgi Kim, and Shim Sung Lee. "Macrocyclic isomer-dependent supramolecular silver(i) complexes via endo/exo-coordination modes: a tetranuclear bis(macrocycle) complex vs. a 2D coordination polymer." CrystEngComm 18, no. 28 (2016): 5253–56. http://dx.doi.org/10.1039/c6ce01003b.

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44

Burchell, Tara J., and Richard J. Puddephatt. "Self-Assembly of Chiral Coordination Polymers and Macrocycles: A Metal Template Effect on the Polymer−Macrocycle Equilibrium." Inorganic Chemistry 44, no. 10 (2005): 3718–30. http://dx.doi.org/10.1021/ic050097w.

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45

Wang, Qi-Bao, Zi-Yan Jing, Xiang-Ming Hu, Wen-Xin Lu, and Peng Wang. "Synthesis, structure, and heterogeneous Fenton reaction of new Cu(ii)-based discrete Cu2Lx coordination complexes." CrystEngComm 23, no. 1 (2021): 216–20. http://dx.doi.org/10.1039/d0ce01363c.

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Cu<sub>2</sub>L<sub>4</sub> cage and Cu<sub>2</sub>L<sub>2</sub> macrocycle were obtained and the heterogeneous Fenton reaction experiments showed that they are good photocatalysts in the photocatalytic degradation process of MB with using hydroxyl radicals and high-valence copper ions.

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46

Vojtíšek, Pavel, and Jan Rohovec. "Preparation and Structural Characterization of the Intermediate Complex [Er{H2C8H16N4(CH2COO)3(CH2(Ph)PO2)}(H2O)2]2Cl2·xH2O in the Reaction of Er3+ and the dota-Type Ligand. an Interesting Example of Two Stereoforms of a Lanthanide Complex." Collection of Czechoslovak Chemical Communications 71, no. 2 (2006): 264–78. http://dx.doi.org/10.1135/cccc20060264.

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The synthesis of a new H4do3aPPh ligand related to the 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetate (dota) family is described together with its erbium(III) complexes. The complexes constitute a new type of coordination compounds within the Ln-dota family, with the macrocycle protonated and erbium ions above the ring. They represent an intermediate stage on the way from the ligand to the classical in-cavity complexes. In addition, the erbium complexes have been isolated in two stereoforms, differing mainly in the arrangement on the erbium ion. The coordination polyhedra found are dodec

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47

Abdul-Kadir, Maisara, Lyall R. Hanton, and Christopher J. Sumby. "Self-assembled metallo-macrocycle based coordination polymers with unsymmetrical amide ligands." Dalton Transactions 40, no. 45 (2011): 12374. http://dx.doi.org/10.1039/c1dt10853k.

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48

Gontier, Elodie, Nathalie Bellec, Pierre Brignou, et al. "Pyridyldithiafulvenes as Precursors of Coordination-Driven Self-Assembled Redox Active Macrocycle." Organic Letters 12, no. 10 (2010): 2386–89. http://dx.doi.org/10.1021/ol1007422.

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49

Carlton, Laurance, Robert D. Hancock, Hulisani Maumela, and Kevin P. Wainwright. "Stability enhancement of heavy-metal–macrocycle complexes via pendant amide coordination." J. Chem. Soc., Chem. Commun., no. 8 (1994): 1007–8. http://dx.doi.org/10.1039/c39940001007.

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50

Avilés-Moreno, Juan Ramón, Francisco Gámez, Giel Berden, Jonathan Martens, Jos Oomens, and Bruno Martínez-Haya. "Multipodal coordination and mobility of molecular cations inside the macrocycle valinomycin." Physical Chemistry Chemical Physics 22, no. 35 (2020): 19725–34. http://dx.doi.org/10.1039/d0cp02996c.

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Small cations (K<sup>+</sup>, NH<sub>4</sub><sup>+</sup>) occupy the center of the valinomycin cavity. Bulkier cations like H<sub>4</sub>PO<sub>4</sub><sup>+</sup> stretch the valinomycin backbone, which adopts barrel-like and funnel-like configurations, depending on the dynamically varying position of the cation.

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