PROTONATION OF PHOSPHINE COMPLEXES OF ZEROVALENT NICKEL, PALLADIUM, PLATINUM, AND RUTHENIUM WITH FLUOROCARBON ACIDS

Protonation of phosphine complexes of zerovalent nickel, palladium, and platinum with H2C(SO2CF3)2 yields the HC(SO2CF3)2- salts of L3MH+ (L = Ph3P, Ph2PMe, Et3P; M = Ni, Pd, Pt). The cations in [(Ph3P)3PdH][HC(SO2CF3)2], [(Ph2PMe)3PdH][HC(SO2CF3)2], [(Ph3P)3NiH][HC(SO2CF3)2], and [Et3P)3NiH][HC(SO2CF3)2] are stereochemically nonrigid in CH2Cl2 solution, and thermodynamic parameters for the permutational processes are reported. Protonation of (Ph3P)3Pd(CO) affords fluxional [(Ph3P)4Pd2(mu-CO)(mu-H)][HC(SO2CF3)2. Protonation of (Ph3P)2Ru(CO)3 yields [Ph3P)2Ru(CO)3H][HC-(SO2CF3)2]; crystal data: triclinic, P1BAR; a = 13.261 (2), b = 14.216 (3), c = 12.912 (3) angstrom; alpha = 96.92 (3), beta = 106.72 (3), gamma = 67.24 (1)degrees; Z = 2.