STABILISATION OF MOLYBDENUM THIOLATE COMPLEXES BY BRIDGING NITROGEN LIGANDS. Ljubica Manojlovic-Muira, Kenneth W. Muira, Philippe Scholhammerb and Francois Y. Petillonb. aChemistry Department, Glasgow University, Glasgow G12 8QQ, UK; bURA CNRS 322, Faculte des Sciences, Universite de Bretagne Occidentale, B.P. 809, Brest-Cedex, France.
Our interest in the structures of dinuclear and polynuclear molybdenum complexes stabilised by thiolate bridges arises from their importance as models for metal-sulphur sites in biological and catalytic systems. Besides this, such compounds have found applications as synthons for the production of heteronuclear clusters.Our previous studies of the products of reactions of mono- and binuclear molybdenum organometallics with dimethyl disulphide have involved characterisation of new dinuclear and trinuclear molybdenum species, such as [{Cp*Mo(CO)} 2(m-SMe)2(m-SH)][BF4] and [CpMo(CO)(m-SMe)3Mo(CO)2(m-SMe)Mo(CO)2Cp] (see Schollhammer et al., 1995). A complication in this work has been the frequent occurrence of disorder in the bridging groups of complexes based on a CpMo(m-SMe)nMoCp core. Examples of this will be presented. In addition, the structures of a number of compounds currently under investigation in this laboratory in which bridging nitrogen atoms are thought to stabilise the CpMo(m-SMe)3MoCp unit will be described.
Schollhammer, P., Pichon, R., Poder-Guillou, S., Talarmin, J., Muir, K.W., & Manojlovic-Muir, Lj. (1995). Organometallics, 14, 2277 - 2287 and refs therein.