Olefin uptake as tool for linking platinum(II) and iridium(III) in heterobinuclear complexes: Synthesis and characterization of [PtI2(Me2phen){(C5Me4CH2CH2CHCH2)Ir(Me)(CO)(Ph)}]

The ability of PtX₂(Me₂phen)] (Me₂phen = 2,9-dimethyl-1,10-phenanthroline, X = Cl, Br, I) to act as olefin scavengers, easily giving stable trigonal bipyramidal five-coordinated platinum species PtX₂(Me₂phen)(η²-olefin)], has been checked toward (C₅Me₄CH₂CH₂CHCH₂)Ir(Me)(CO)(Ph)], a cyclopentadienyl complex containing an olefinic function introduced by ring methyl activation in the pentamethylcyclopentadienyl iridium(III) complex (C₅Me₅)Ir(Me)(CO)(Ph)]. The reaction of PtI₂(Me₂phen)] with (C₅Me₄CH₂CH₂CHCH₂)Ir(Me)(CO)(Ph)] results in the formation of the heterometallic binuclear complex PtI₂(Me₂phen){(C₅Me₄CH₂CH₂CHCH₂)Ir(Me)(CO)(Ph)}] which is stable and has been completely characterized by elemental analysis, ¹H, ¹³C, and ¹⁹⁵Pt NMR spectroscopy.