HYDRIDO-COMPLEXES OF TRANSITION METALS. PART I. HYDRIDO-COMPLEXES OF RHODIUM(I), COBALT(I), AND COBALT(III)
Abstract
The preparation and properties are described of complex-salts of rhodium(I), (Rh(C2H4(PPh2)2)2)X (X = Cl, ClO4, BPh4). From these compounds, a very stable hydrido-complex of rhodium(I), (RhH(C2H4(PPh2)2)2), was prepared by reduction with lithium aluminium hydride or sodium borohydride. The product of the reaction between (CoBr2(C2H4(PP2)2)2) and sodium borohydride, previously described as a derivative of cobalt(0), is shown to be a hydrido-complex of cobalt(I), (CoH(C2H4(PPh2)2)2). This formula is supported by the diamagnetism of the compound, by its infrared spectrum, and by its reaction with carbon tetrachloride to give chloroform. On the grounds of their dipole moments (ca.3- 4D) and of their isomorphism with (Ni(C2H4(PPh2)2)2), a non-orthogonal structure for these hydrido-complexes of rhodium and cobalt is suggested. The hydrido- complexs of cobalt(I) behaves like a Lewis base, giving with perchloric acid the hydrido-complexes (CoH2(C2H4(PPh2)2)2)ClO4.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 29, 1963
- Accession Number
- AD0611382
Entities
People
- A. Sacco
- R. Ugo
Organizations
- University of Milan