Bis(mercaptoimidazolyl)borates and the control of nuclearity in cadmium thiolate complexes

摘要

Bis(mercaptoimidazolyl)borate cadmium(II) thiolate complexes of empirical formula (Bm(Me))CdSR (R = Ph, p-Tol, C6F5) have been readily prepared from the new bromo derivative (Bm(Me))CdBr and the corresponding thallium(I) thiolates Tl(SR). The new complexes have been characterized analytically and spectroscopically and, in the case of the para-thiocresolate derivative (Bm(Me))CdS-p-C6H4Me, by X-ray diffraction. While the closely related tris(mercaptoimidazolyl)borate cadmium phenylthiolate complex (Tmp-Tol)CdSPh is mononuclear, (Bm(Me))CdS-p-C6H4Me exhibits in the solid state a dimeric structure in which each five-coordinate cadmium atom displays a trigonal bipyramidal geometry. (C) 2003 Elsevier Ltd. All rights reserved. [References: 47]