Inorganic Chemistry, Vol.37, No.5, 1112-1115, 1998
Spectroscopic identification and electrochemical behavior of the dihydride tetrapalladium cluster [Pd-4(dppm)(4)(H)(2)]X-2 (X = Cl, Br)
Pd-2(dppm)(2)X-2 complexes (X=Cl, Br) react with NaBH4 to form [Pd-4(dppm)(4)(mu(4)-H)(2)]X-2 as characterized from chemical analysis, FAB mass, !H and 3!P NMR, and UV-vis spectroscopy, polarography, and conductivity measurements. The dicationic cluster can be reversibly electrochemically catalysis reduced to "Pd-4(dppm)(4)(H)(2)", which is stable at the electrochemical time scale.
Keywords:BINUCLEAR PALLADIUM COMPLEXES;UNUSUAL COORDINATION BEHAVIOR;TRIPLY BRIDGING SITE;UNSATURATED CLUSTERS;OXIDATIVE ADDITION;H BOND;HYDRIDE;CHEMISTRY;PLATINUM;CRYSTAL