摘要：

Complexes of general formulae, [Cu(qaldsme)(X)(CH 3OH) n] and [Ni(qaldsme) 2] · 0.5CH 3CN (qaldsme = anionic form of the 2-quinoline carboxaldehyde Schiff base of S-methyldithiocarbazate; X = NCS , I , NO 3 -; n = 0 or 1) have been synthesized and characterized by magnetic and spectroscopic techniques. X-ray crystal structure determination of [Cu(qaldsme)(ONO 2)(CH 3OH)] ( 1), [Cu(qaldsme)(NCS)] 2 ( 2) and [Ni(qaldsme) 2] · 0.5CH 3CN ( 4) shows that the nitrato-complex of copper ( 1) is monomeric and five-coordinate and the thiocyanato-complex ( 2) has a novel thiolate sulfur-bridged dimeric structure in which each of the copper(II) ions adopts a five-coordinate, approximately square-pyramidal geometry, with a CuN 3S 2 coordination kernel. The nickel(II) complex ( 3) has a distorted octahedral geometry with meridional dispositions of the two uninegatively charged tridentate NNS ligands. In all these complexes, the Schiff bases are coordinated in their iminothiolate forms via the quinoline nitrogen atom, the azomethine nitrogen atom and the thiolate sulfur atom.

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