N. Ando, K. Maruya, T. Mizoroki
Mar 1, 1971
Citations
0
Influential Citations
9
Citations
Journal
Journal of Catalysis
Abstract
Abstract Bis(triphenylphosphine)-nickel(II) halide has been found to catalyze the H-D exchange reaction of C2D4 and C2H4 in the presence of molecular hydrogen at room temperature in spite of the fact that the rate of the exchange between H2 and D2 is very slow. From the kinetics of this reaction and the solvent effect, it has been postulated that bis(triphenylphosphine)-nickel(II) halide forms a nickel-hydride complex by the heterolytic splitting of hydrogen molecule in the course of the reaction as follows: NiX2(Pφ3)2 + H2→ NiHX(Pφ3)2 + HX where X and φ are halogen and C6H5, respectively. The nickel hydride complex thus formed is concluded to be the real catalyst for the H-D exchange in ethylene by the scheme. C2D4 + NiH → NiC2D4H → C2D3H + NiD