Bridge vs. terminal protonation of isostructural Mo–Pt and W–Pt heterobimetallic compounds
Abstract
Protonation of the complexes cp(OC)2[graphic omitted](CO)(PPh3)(cp = cyclopentadienyl) exhibits an M-dependent site selectivity, with protonation occurring at the metal–metal bond for M = Mo to give [cp(OC)2Mo(µ-PPh2)(µ-H)-Pt(CO)PPh3]+ whilst for M = W protonation occurs directly at he tungsten to give a terminal hydrido cation [cp-(OC)2H[graphic omitted](CO)PPh3]+.