Cluster chemistry. LXVI. Some ironiridium clusters. X-ray structures of Fe2Ir(μ3-C2Ph)(CO)8(PPh3), FeIr232-PhC2C2Ph)(CO)7(PPh3)2 and Fe2Ir(μ3-PhC2PEt3)(CO)7(PEt3)

Michael I. Bruce, George A. Koutsantonis, Edward R.T. Tiekink

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Reactions between Ir(C2Ph)(CO)2(PPh3)2 and iron carbonyls (Fe(CO)5, Fe2(CO)9 have given FeIr clusters Fe2Ir(μ3-C2Ph)(CO)9-n(PPh3)n (n = 1 (8), 2) and FeIr23-PhC2C2Ph)(CO)7(PPh3)2 (9). The Rh analogue of 8 was obtained similarly. Substitution of IrPPh3 by PEt3, and addition of PEt3 to Cα of the acetylide ligand in 8 gave zwitterionic Fe2Ir(μ3-PhC2PEt3)(CO)8(PEt3) (12), which on heating was converted to Fe2Ir(μ3-C2Ph)(CO)7(PEt3)2 by migration of PEt3 from C to Ir. Related complexes containing clustr-bonded PR3 were obtained with PMe2Ph and P(OMe)3. Complexes 8, 9 and 12 were fully characterised by X-ray crystallography.

Original languageEnglish
Pages (from-to)391-412
Number of pages22
JournalJournal of Organometallic Chemistry
Issue number3
Publication statusPublished - 23 Apr 1991
Externally publishedYes

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