Abstract
The η4-trimethylenemethane complexes [Os{η4C(CH2)3}(CO)2(PPh3)], [Ir{η4-C(CH2)3}(Cl)(CO)(PPh3)], and [Ir{η4-C(CH2)3}(CO)(PPh3)2][PF6] have been prepared by treating [Os(CO)2(PPh3)3] with Me3SiCH2C(CH2)CH2OAc, trans-[IrCl(CO)(PPh3)2] with Me3SiCH2C(CH2)CH2Cl, and trans-[IrCl(CO)(PPh3)2] plus KPF6 with Me3SiCH2C(CH2)CH2Cl, respectively; the X-ray crystal structure of [Ir{η4-C(CH2)3}(Cl)(CO)(PPh3)] indicates that the trimethylenemethane is not symmetrically bound to the iridium.
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