A dissymmetric, singly phenoxido-bridged Cu-II dinuclear coordination compound: synthesis, characterisation, magnetic and computational study

作者：Datta Amitabha^*; Chuang Nien Tsu; Liao Fu Xing; Hu Ching Han; Huang Wen Yen; Huang Jui Hsien; Das Kuheli; Gamez Patrick; Sanchez Costa Jose

来源：Journal of Chemical Research, 2010, (11): 637-640.

DOI：10.3184/030823410X12886325735063

• copper(II)
• phenoxido-bridge
• spectroscopic study
• antiferromagnetic coupling

A singly phenoxido-bridged dinuclear Cu-II complex, [Cu-2(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 mu(2)-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 2J value of -89(1) cm(-1).

• 出版日期2010-11