Abstract

To examine the properties of Ir-O and Ir-N bonds in the absence of the hydride ligand, preparation of methyl complexes Cp*IrPPh 3 (Me)(X), where X=OPh or NHPh, for comparison with the corresponding hydrides Cp*IrPPh 3 -(H)(X). The methyl compounds readily undergo substitution of the triphenylphosphine, which is not observed in the hydride series. The rate of this process is strongly dependent on the nature of X, demonstrating that alkoxides and amides can affect the reactivity of a metal complex even when reaction does not occur at the metal-heteroatom bond

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