Jl. Xiao et al., MODELS FOR BIMETALLIC CATALYSTS - SELECTIVITY IN LIGAND ADDITION AS AFUNCTION OF RHENIUM OXIDATION-STATE IN PT3RE CLUSTERS, Journal of the Chemical Society, Chemical Communications, (19), 1994, pp. 2221-2222
The ligands CO, P(OR)(3), and X- (X = Cl, Br, I) add selectively to th
e Re and Pt-3 sites in the coordinatively unsaturated clusters [Pt-3{R
e(CO)(3)}(mu-dppm)(3)](+) and [Pt-3{ReO3}(mu-dppm)(3)](+) respectively
, dppm = Ph(2)PCH(2)PPh(2): the selectivity thus displays a remarkable
dependency on the oxidation state of rhenium.