The generation of “MClL2” centers in THF solution (M = Ir, L = AsPh3, SbPh3; M = Rh, L = SbPh3) leads to stable η2-MCl(C5H8)L2 complexes on the addition of an excess of trans-1,3-pentadiene. For IrCl(PPh3)2, it is only possible to recover a clean pentadiene complex if the reaction is carried out in neat diene solution. Cyclobutene also coordinates to “IrClL2” (L = AsPh3, SbPh3) to form an IrCl(C4H6)L2 product when excess cyclobutene is condensed with a starting material at −78°C, THF is added, and the solution is warmed to 25°C. These 16-electron MCl(olefin)L2 complexes are stable to disproportionation after isolation from solution. The most stable complexes are formed with the tertiary arsine and stibine ligands for M = Ir.
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Organic Chemistry
- Inorganic Chemistry
- Materials Chemistry