Electrochemistry of dinuclear, thiolato-bridged transition-metal compounds. Part 2. Reductive electrochemistry of metal–metal bonded complexes [(η5-C5H5)(CO)2Mo(µ-SMe)W(CO)4L][L = CO or P(OMe)3]
Abstract
The compounds [(η5-C5H5)(CO)2[graphics omitted](CO)4L](1)(L = CO) and (2)[L = P(OMe)3] have been studied by electrochemical methods (cyclic voltammetry, controlled-potential electrolysis, and coulometry) in propylene carbonate. The substitution of P(OMe)3 for CO at the tungsten centre is shown to have various effects on the electrochemical behaviour. Both (1) and (2) are reduced according to an e.c.-disp. process (second electron transfer is homogeneous) which differs depending on the nature of L. The results reported are consistent with the presence of an acceptor–donor metal–metal bond in both compounds.