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Tris(triphenylphosphine)rhodium carbonyl hydride : ウィキペディア英語版 | Tris(triphenylphosphine)rhodium carbonyl hydride
Tris(triphenylphosphine)rhodium carbonyl hydride is an organorhodium compound with the formula HRh(CO)(PPh3)3 (Ph = C6H5). It is a yellow, benzene-soluble solid, which is used industrially for hydroformylation.〔 ==Preparation== HRh(CO)(PPh3)3 was first prepared by the reduction of RhCl(CO)(PPh3)2 and hydrazine in an ethanolic suspension. Alternative syntheses involve the reaction of the same rhodium precursor with sodium tetrahydroborate, or triethylamine and hydrogen, in ethanol in the presence of excess triphenylphosphine. :RhCl(CO)()2 + NaBH4 + PPh3 → RhH(CO)(PPh3)3 + NaCl + BH3 It can also be prepared from an aldehyde, rhodium trichloride and triphenylphosphine in basic alcoholic media.〔N. Ahmad, J. J. Levison, S. D. Robinson, M. F. Uttley "Hydrido Phosphine Complexes of Rhodium(I)" Inorg. Syntheses 1990, volume 28, p. 81–83. .〕
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