Data di Pubblicazione:
1989
Citazione:
Gold-rhodium and gold-iridium hydride clusters / A. Albinati, F. Dematin, P. Janser, L. Rhodes, L. Venanzi. - In: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY. - ISSN 0002-7863. - 111:6(1989 Mar), pp. 2115-2125.
Abstract:
The hydrides MH3(tripod) (M = Rh and Ir; tripod = triphos and triars) react with [Au(L)]+ cations to give
heterometallic species of the types [(tripod)MH,Au(L)]+, type A, [(tripod)MH,(A~(L))~]~+, type B, and [(trip~d)MH~(Au(L))~]*+,
type C. The complexes of type A can be described as containing one M-H-Au unit which, however, is still dynamic at -90
OC. Similar behavior is observed for the complexes of type B where two M-H-Au units are present. The complexes of type
C contain only two hydride ligands. The X-ray crystal structure of [(triphos)RhH2(Au(PPh3)),] (CF,S03)2 shows the presence
of a RhAu, tetrahedron with the rhodium capped by triphos, while each gold atom is coordinated to one PPh,. The hydride
ligands could not be located, but it is proposed that they may occupy two RhAu2 triangular faces. Crystal data: space group
R3c, a = 20.343 (3) A, c = 44.937 (7) A, Z = 6, V = 16104.9 A3, p(ca1cd) = 1.486 g cm-,, and R = 0.049.
heterometallic species of the types [(tripod)MH,Au(L)]+, type A, [(tripod)MH,(A~(L))~]~+, type B, and [(trip~d)MH~(Au(L))~]*+,
type C. The complexes of type A can be described as containing one M-H-Au unit which, however, is still dynamic at -90
OC. Similar behavior is observed for the complexes of type B where two M-H-Au units are present. The complexes of type
C contain only two hydride ligands. The X-ray crystal structure of [(triphos)RhH2(Au(PPh3)),] (CF,S03)2 shows the presence
of a RhAu, tetrahedron with the rhodium capped by triphos, while each gold atom is coordinated to one PPh,. The hydride
ligands could not be located, but it is proposed that they may occupy two RhAu2 triangular faces. Crystal data: space group
R3c, a = 20.343 (3) A, c = 44.937 (7) A, Z = 6, V = 16104.9 A3, p(ca1cd) = 1.486 g cm-,, and R = 0.049.
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
A. Albinati, F. Dematin, P. Janser, L. Rhodes, L. Venanzi
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