Journal of Organometallic Chemistry p. 99 - 112 (1983)
Update date:2022-08-16
Topics:
Castiglioni, Mario
Sappa, Enrico
Valle, Mario
Lanfranchi, Maurizio
Tiripicchio, Antonio
The complexes (η-C5H5)NiOs3(CO)9(μ2-H)3 and (η-C5H5)3Ni3Os3(CO)9 can be obtained in high yield by treating Os3(CO)12 or H2Os3(CO)10 with <(η-C5H5)Ni(CO)>2 in refluxing hydrocarbons.The course of the reactions and the yields of the products can be modified by carrying out the reaction under nitrogen, hydrogen or carbon monoxide atmospheres.A preliminary report of an X-ray study of the hexametallic, 87 e-k cluster was presented.The new tetrametallic derivative was characterized by spectroscopic techniques; a tetrahedral tri-hydridic structure is proposed for thiscomplex.The reactions of the heterometallic nickel-osmium complexes towards ligands, in particular alkenes and alkynes, are discussed.A preliminary investigation of homogeneous hydrogenation of these substrates is reported.
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