Unsaturated σ-hydrocarbyl transition-metal complexes. Part I. Tri-methyltin acetylides as sources of late transition-metal derivatives: metathesis, oxidative addition, and oxidative cleavage
- 1 January 1973
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 11,p. 1202-1208
- https://doi.org/10.1039/dt9730001202
Abstract
The reactions of the tin acetylides R3Sn·C⋮CPh (R = Me or Et) with some low oxidation state complexes of Mo0, MoII, Co0, RhI, IrI, and Pt0 have been investigated. They fall into four classes : metathesis [e.g., with RhCl(CO)(PPh3)2→ Rh(C⋮CPh)(CO)(PPh3)2]; oxidative addition, with or without neutral ligand elimination [e.g., Ir(C⋮CPh)(CO)(PPh3)2→ Ir(C⋮CPh)2(SnMe3)(CO)(PPh3)2 or Pt(PPh3)2→ Pt(C⋮CPh)(SnMe3)(PPh3)2]; metathesis and oxidative addition [e.g., IrCl(CO)(PPh3)2→ Ir(C⋮CPh)2(SnMe3)(CO)(PPh3)2]; and oxidative cleavage [e.g., {Mo(π-C5H6)(CO)3}2→ Mo(π-C5H5)(SnMe3)(CO)3]. The structures of the compounds are assigned on the basis of spectroscopic data. Complexes having both SnR3 and acetylide units are regarded as mono-hapto-(PhC⋮C·M·SnR3) rather than bi-hapto-([graphic omitted]SnR3). Selected reactions of some of the new Rh, Ir, and Pt acetylides are described.Keywords
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