Activation of molecular hydrogen by transition metal complexes. Communication 6. Role of molecular oxygen in formation of palladium complexes that are active in the hydrogenation of unsaturated compounds
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In order to form complexes that will catalyze the hydrogenation of unsaturated hydro-carbons in a system consisting of (Ph3P)2Pd2, HOAc, and H2, the presence of oxygen is necessary. Under these conditions, the hydrogen and oxygen form water and H2O2, which oxidizes the bis-(triphenylphosphine)dipalladium to palladium acetate. The palladium acetate, by reaction with the bis(triphenylphosphine)dipalladium and hydrogen, gives a complex that is active in hydrogenation.
A cluster with the composition [(PPh)2Pd5]n, which is active in the hydrogenation of unsaturated hydrocarbons, has been isolated as an individual substance.
KeywordsOxygen Hydrogenation H2O2 Palladium Metal Complex
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- 1.A. S. Berenblyum, A. G. Knizhnik, S. L. Mund, and I. I. Moiseev, Izv. Akad. Nauk SSSR, Ser. Khim., p. 2711 (1978).Google Scholar
- 2.A. S. Berenblyum, A. G. Knizhnik, S. L. Mund, and I. I. Moiseev, Izv. Akad. Nauk SSSR, Ser. Khim., p. 1687 (1979).Google Scholar
- 3.A. G. Knizhnik, Dissertation, Moscow (1981).Google Scholar
- 4.E. L. Mutterties (editor), Transition Metal Hydrides, Marcel Dekker, New York (1971).Google Scholar
- 5.A. S. Berenblyum, A. G. Knizhnik, S. L. Mund, and I. I. Moiseev, Izv. Akad. Nauk SSSR, Ser. Khim., p. 2157 (1979).Google Scholar
- 6.T. G. Sukhova and O. N. Temkin, Koord. Khim.,2, 1540 (1976).Google Scholar
- 7.J. K. Kouba, J. L. Pierce, and R. A. Walton, J. Organomet. Chem.,187, C105-C107 (1980).Google Scholar