scholarly journals Crystal structure of tetrakis( μ-betaine-O,O')dibromo-dicopper(II) tetrabromocuprate( II) monohydrate, [Cu2{(CH3)3NCH2COO}4Br2][CuBr4]·H2O, with a propeller-shaped dinuclear copper complex

2006 ◽  
Vol 221 (4) ◽  
pp. 529-531
Author(s):  
J. Schreuer ◽  
L. Wiehl ◽  
J. Biehler ◽  
P. Hofmann
Keyword(s):  
Crystal Structure ◽  
Copper Complex ◽  
Dinuclear Copper

Oxidation of copper(II) hydroxyporphyrin (oxophlorin); oxidative ring opening and formation of an ester-linked, dinuclear copper complex

2001 ◽  
Vol 79 (5-6) ◽  
pp. 922-929 ◽  
Author(s):  
Shane Phillips ◽  
Bruce C Noll ◽  
Marilyn M Olmstead ◽  
Alan L Balch
Keyword(s):  
Crystal Structure ◽  
Copper Complex ◽  
Epr Spectroscopy ◽  
Ring Opening ◽  
Oxidative Cleavage ◽  
Dinuclear Complex ◽  
Dinuclear Copper ◽  
Ring Opening Reaction ◽  
Copper Porphyrin ◽  
Ester Linkage

Addition of copper(II) acetate to octaethyl(meso-hydroxy)porphyrin (H2OEPOH) in THF under a dinitrogen atmosphere produces CuII(OEPOH), which has been isolated as red crystals and shown to have a meso-hydroxyporphyrin structure by UV-vis and EPR spectroscopy. CuII(OEPOH) undergoes oxidation by dioxygen to form a novel dinuclear copper complex {CuII(OEPOC(O)OEB)CuII}. This dinuclear complex is composed of a copper(II) meso-substituted porphyrin portion (with a planar CuN4 unit), which is attached through an ester linkage to a helical copper(II) tetrapyrrole that has been ring-opened through oxidative cleavage of a second molecule of CuII(OEPOH). The oxidative ring-opening reaction resembles that of natural heme catabolism but is arrested at a stage where the oxidized meso-carbon is still appended to the helical open tetrapyrrole. A mechanism is suggested for this process.Key words: copper porphyrin, crystal structure, porphyrin oxidation, linear tetrapyrrole, hydroxy-porphyrin, oxophlorin.

[μ-10,21-Difluoro-3,6,14,17-tetrazatricyclo[17.3.1.18,12]tetracosa-1(23),2,6,8,10,12(24),13,17,19,21-decaene-23,24-diolato-κ4 N 3,N 6,O 23,O 24:κ4 N 14,N 17,O 23,O 24]bis[methanolcopper(II)] bis(perchlorate)

2007 ◽  
Vol 63 (11) ◽  
pp. m2641-m2641 ◽  
Author(s):  
Jun-Lin Bai ◽  
Hong Zhou ◽  
Zhi-Quan Pan ◽  
Xiang-Gao Meng
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Copper Complex ◽  
Title Complex ◽  
Tetrahedral Geometry ◽  
Intramolecular Hydrogen Bonds ◽  
Dinuclear Copper ◽  
Distorted Tetrahedral Geometry ◽  
O 24 ◽  
Intramolecular Hydrogen

The title complex, [Cu2(C20H16F2N4O2)(CH4O)2](ClO4)2, was synthesized by cyclo-condensation between ethylenediamine and 2,6-diformyl-4-fluorophenol in the presence of CuII ions. This dinuclear copper complex is centrosymmetric. Both Cu atoms are in a distorted tetrahedral geometry, coordinated by three O atoms and two N atoms. The two Cu atoms are bridged by two endogenous phenol O atoms, with a Cu...Cu distance of 2.8998 (7) Å. In the crystal structure, the perchlorate ions link the macrocycles through inter- and intramolecular hydrogen bonds.

Oximato bridged dinuclear copper(II) complexes: Synthesis, crystal structure, magnetic, thermal, electrochemical aspects and BVS analysis

Polyhedron ◽  
2012 ◽  
Vol 43 (1) ◽  
pp. 89-96 ◽  
Author(s):  
Jnan Prakash Naskar ◽  
Bhargab Guhathakurta ◽  
Liping Lu ◽  
Miaoli Zhu
Keyword(s):  
Crystal Structure ◽  
Dinuclear Copper

Synthesis, structure, and magnetic properties of dicopper and tricobalt complexes based on N-(2-pyridylmethyl)iminodiethanol

2015 ◽  
Vol 2 (8) ◽  
pp. 763-770 ◽  
Author(s):  
Jong Won Shin ◽  
Ah Rim Jeong ◽  
Shinya Hayami ◽  
Dohyun Moon ◽  
Kil Sik Min
Keyword(s):  
Magnetic Properties ◽  
Copper Complex ◽  
Mixed Valence ◽  
Molecular Magnetism ◽  
Dinuclear Copper

A novel unsymmetrical dinuclear copper complex [Cu(H2pmide)(NO3)Cu(Hpmide)](NO3)2 (1) and a mixed-valence trinuclear cobalt compound [(pmide)2Co3(CH3CO2)2(NCS)2]·4CH3OH (2) have been prepared and characterized using structure and molecular magnetism.

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