Chemistry of iridium carbonyl : I. Chemical and structural characterization of the tetranuclear anions [Ir4(μ-CO)3(CO)8(COOR)]- |
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| Authors: | Luigi Garlaschelli Secondo Martinengo Paolo Chini Franco Canziani Robert Bau |
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| Institution: | Centro di studio sulla sintesi e la struttura dei composti dei metalli di transizione nei bassi stati di ossidazione, Istituto di Chimica Generale dell''Universita di Milano, Via G. Venezian 21, 20133 Milano Italy;Istituto di Chimica, Facolta'' di Scienze, Universita'' di Salerno, 84100 Salerno Italy;Department of Chemistry, University of Southern California, Los Angeles, CA 90007 U.S.A. |
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| Abstract: | 1 The anions Ir4(CO)11(COOR)- (R Me, Et) have been prepared by reacting Ir4(CO)12 with alkali alkoxides in dry alcohol and under an atmosphere of carbon monoxide. The reaction of Ir4(CO)11(COOMe)]- with primary and secondary alcohols (EtOH, PriOH) gives rise to specific alcoholysis. The anions Ir4(CO)11(COOR)- react with acids in THF solution to give quantitatively Ir4(CO)12. The chemical, spectroscopic and crystallographic characterization of the tetranuclear anions are reported. |
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