Synthesis and physico-chemical studies of bimetallic alkoxy derivatives of chromium(III) with niobium(V) and tantalum(V)

Agarwal, S. K. ; Mehrotra, R. C. (1986) Synthesis and physico-chemical studies of bimetallic alkoxy derivatives of chromium(III) with niobium(V) and tantalum(V) Inorganica Chimica Acta, 112 (2). pp. 177-181. ISSN 0020-1693

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S00201...

Related URL: http://dx.doi.org/10.1016/S0020-1693(00)84493-X

Abstract

Reactions of CrCl3·3thf with KM(OPri)6 in 1:3 molar ratios in benzene yield soluble complexes of the type Cr[M(OPri)6]3 (M=Nb or Ta). On heating under vacuum, these complexes tend to disproportionate into Cr(OPri)3 and M(OPri)5 (M=Nb or Ta). A number of bimetallic alkoxides have also been synthesized by the alcoholysis of Cr[M(OPri)6]3 with alcohols (methanol, ethanol and t-amyl alcohol). The IR, visible, electron spin resonance and magnetic properties of these newly synthesized complexes throw light on the structural features.

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