HYDRIDO-COMPLEXES OF RHODIUM(I) AND COBALT(I)
MILAN UNIV (ITALY) ISTITUTO DI CHIMICA GENERALE
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The preparation and properties of complex salts of rhodiumI, of formula RhC2H4PPh222 X X Cl, ClO4, BPh4, are described. From these a very stable hydrido-complex of rhodiumI, of formula RhHC2H4PPh222 is prepared by reduction with lithium aluminium hydride and with sodium borohydride. The product of reaction between CoBr2C2H4PPh222 and sodium borohydride, previously described as a derivative of cobaltO, is shown to be a hydrido-complex of cobaltI, of formula CoHC2H4PPh222. This formula is proved by the diamagnetism of the compound, by its infrared spectrum and by its reaction with carbon tetrachloride to give chloroform. The dipole moments, of the order of 3 - 4 D, suggest a non-ortogonal structure for these hydrido- complexes of rhodium and cobalt.
- Inorganic Chemistry