Abstract
The complexes MCl2(COC3H5)(PMePh2)2, 1 and 7 (M = Ir, Rh), IrCl2(C3H5)(CO)(PMePh2)2, 2 and 3, and IrCl2(COC3H5)(PMePh2)3,5, have been synthesized in good yield by the reaction of cyclopropylmethanoic chloride (C3H5C0C1) with the low-valent coordinatively unsaturated metal complexes [IrC((C8H4)2]2 or [RhCl(C2H4)2]2 after treatment of the latter with PMePh2. Their structures have been deduced by interpretation of 31P{1H) and 1H NMR and IR spectra. In the five-coordinate acyl complexes 1 and 7, the geometry about the metal is square pyramidal with cis phosphine ligands, cis chloro ligands, and an apical cyclopropylmethanoyl ligand. The six-coordinate octahedral bis(phosphine)iridium complexes 2 and 3 contain cis or trans phosphine ligands, respectively, while the tris(phosphine) complex 5 has meridional phosphine ligands. Abstraction of a chloro ligand from IrCl2(COC3H6)(PMePh2)3 by NH4PF6 affords [IrCl(C3H5)(CO)(PMePh2)3][PF6], Reduction of IrCl2(C3H6)(CO)(PMePh2)2,3, by K/benzophenone affords trans-Ir(C3H5)(CO)(PMePh2)2. No evidence for rearrangement of the cyclopropyl group to a π-allyl group is found.
Original language | English (US) |
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Pages (from-to) | 490-494 |
Number of pages | 5 |
Journal | Organometallics |
Volume | 2 |
Issue number | 4 |
DOIs | |
State | Published - Apr 1983 |
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Organic Chemistry
- Inorganic Chemistry