Tetrazolate rhodium(I) complexes. Crystal structures of the trinuclear complexes [Rh 3(μ 3-ttz)(μ-Cl)Cl(cod) 2(CO) 2] (ttz = tetrazolate, cod = cyclo-octa-1,5-diene) and [Rh 3(μ 3-ttz)(μ-Cl)Cl(CO) 6], an unusual example of metal-metal interactions
- Oro, L.A. 1
- Pinillos, M.T. 1
- Tejel, C. 1
- Apreda, M.C. 2
- Foces-Foces, C. 2
- Cano, F.H. 2
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1
Instituto de Nanociencia y Materiales de Aragón
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2
Instituto de Química Física Rocasolano
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ISSN: 1472-7773
Año de publicación: 1988
Volumen: 7
Páginas: 1927-1933
Tipo: Artículo
Otras publicaciones en: Journal of the Chemical Society, Dalton Transactions
Resumen
Homo- and hetero-bridged binuclear complexes of general formulae [Rh2(μ-ttz)2(L2)2] [ttz = tetrazolate, L2 = diolefin or (CO)2] and [Rh2(μ-ttz)(μ-X)L2L′2] [X = Cl, L2 = L′2 = diolefin; X = N3, L2 = L′2 = diolefin, L2 = cyclo-octa-1,5-diene (cod), L′2 = (CO)2] have been prepared. The heterobridged complexes, having unco-ordinated N atoms from the tetrazolate group, react with [Rh2(μ-Cl)2(L″2)2] (2: 1 molar ratio) [L″2 = cod or (CO)2] to give trinuclear compounds of general formula [Rh3(μ3-ttz)(μ-X)ClL2L′ 2L″2] (X = Cl or N3). The latter complexes can also be obtained by reaction of [Rh2(μ-ttz)2(L2)2] with [Rh2(μ-Cl)2(L′2)2] (1: 2 molar ratio). X-Ray crystallographic studies of the complexes [Rh3(μ3-ttz)(μ-Cl)Cl(cod)2(CO) 2] (12) and [Rh3(μ3-ttz)(μ-Cl)Cl(CO)6] (13) show them to contain trinuclear units, with bridging Cl atoms and tetrazolate groups. In complex (13) the units pack in the crystal with infinite chains, through Rh ⋯ Rh interactions of 3.457(2), 3.229(2), and 3.399(2) Å. In compound (12) the complex consists only of two units, related by a symmetry centre with a Rh ⋯ Rh distance equal to 3.519(2) Å.