Reaction of trans-{PtH2[P(C6H11)3]2} with carbon disulphide. Kinetic study of the insertion reaction and X-ray structure of trans-{PtH(S2CH)[P(C6H11)3]2}

Carbon disulphide inserts into the PtH bond of trans-{PtH2[P(C6H11)3]2} to give trans-{PtH(S2CH) [P(C6H11)3]2}. The X-ray structure shows that the -S2CH group is bonded to the metal through a sulfur atom as a monodentate thioformate anion. The kinetics of the carbon disulfide insertion have been investigated. The results account for a mechanism involving CS2 addition to trans-{PtH2[P(C6H113]2} to give a five-coordinate intermediate, which collapses to trans-{PtH(S2CH)[P(C6H11)3]2}.