New Bonding Mode of Tricyclohexylphosphoniothiocarboxylate (S2CPCy3) as an Eight-electron Donor. Synthesis, Reactivity, and X-Ray Crystal Structure of

Article abstract of DOI:10.1039/c39870000472

The reaction of Mn2(CO)10 with the tricyclohexylphosphine-carbon disulphide adduct S2CPCy3 in refluxing toluene affords the dinuclear complex (1) in good yield, the structure of which, determined by X-ray crystallography, shows a new mode of co-ordination of the S2CPCy3 ligand which is bonded to an Mn atom by two sulphur atoms and to the other Mn atom by two sulphur and one carbon atom donating 8 electrons; thermal reactions of (1) with neutral monodentate ligands L yield via CO displacement.