A Dissymmetric, Singly Phenoxido-Bridged Cu∥ Dinuclear Coordination Compound: Synthesis, Characterisation, Magnetic and Computational Study

Autor:	Fu-Xing Liao, Jui-Hsien Huang, Wen-Yen Huang, Ching-Han Hu, Amitabha Datta, José Sánchez Costa, Patrick Gamez, Nien-Tsu Chuang, Kuheli Das
Rok vydání:	2010
Předmět:	chemistry.chemical_classification Stereochemistry chemistry.chemical_element General Chemistry Crystal structure Magnetic susceptibility Copper Coordination complex law.invention Crystallography chemistry Octahedron law Antiferromagnetism Macrocyclic ligand Electron paramagnetic resonance
Zdroj:	Journal of Chemical Research. 34:637-640
ISSN:	2047-6507 1747-5198
DOI:	10.3184/030823410x12886325735063
Popis:	A singly phenoxido-bridged dinuclear Cu∥ complex, [Cu2(L)2(SCN)2(H2O)], has been obtained from a Schiff-base ligand (2-[{[2-(dimethylamino)ethyl]imino}methyl]-6-methoxyphenol), generated by condensation of o-vanillin with N,N-dimethylethane-1,2-diamine. The Cu(II) complex has been fully characterised by analytical, spectroscopic, magnetic susceptibility and EPR measurements and DFT calculations, as well as single-crystal X-ray diffraction analysis. It consists of two geometrically distinct square-pyramidal and octahedral copper(II) centres, exhibiting N2O3 and N4O2 donor sets. In the dimeric unit, the copper atoms are connected by a μ2-phenolato oxygen atom, belonging to one bridging Schiff-base ligand. Variable-temperature magnetic susceptibility measurements indicate strong antiferromagnetic exchange interactions between the Cu(II) centres, with a 2 J value of −89(1) cm−1.
Databáze:	OpenAIRE
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