N-substituted imidazole derivatives of rhodium(I) and iridium(I). Crystal structure of the head-to-head dinuclear compound [Ir2(μ-N-benzylimidazolato-N3,C2)2(CO)4]
- Bonati, F. 1
- Oro, L.A. 1
- Pinillos, M.T. 1
- Tejel, C. 1
- Bovio, B. 2
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1
Instituto de Nanociencia y Materiales de Aragón
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2
University of Pavia
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ISSN: 0022-328X
Year of publication: 1994
Volume: 465
Issue: 1-2
Pages: 267-274
Type: Article
More publications in: Journal of Organometallic Chemistry
Abstract
Complexes [M2(μ-Cl)2(diolefin)2] (M = Rh or Ir; diolefin = cyclo-octa-1,5-diene (cod), norborna-2,5-diene (nbd)) react with lithium N-benzyl-2-imidazolate (LiBzim) to yield dinuclear [M2(μ-Bzim-N3,C2)2(diolefin)2] [M = Rh, diolefin = cod (1), nbd (2); M = Ir, diolefin = cod (3)]. Carbon monoxide reacts with diethyl ether suspensions of [M2(μ-Bzim-N3,C2)2(diolefin)2] to afford the tetracarbonyl complexes [M2(μ-Bzim-N3,C2)2(CO)4][M = Rh (4), Ir (5]. In the crystal structure of dinuclear [Ir2(μ-Bzim-N3,C2)2(CO)4], organocarbonyliridium(I), the Ir atoms exhibit different coordination environments: one Ir coordinates two CO groups and two N atoms of the imidazolate rings, and the other Ir coordinates two CO groups and two C atoms of the imidazolate rings. © 1994.