Intra- and Intermolecular C–H Activation by Bis(phenolate)pyridineiridium(III) Complexes
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https://figshare.com/articles/dataset/Intra_and_Intermolecular_C_H_Activation_by_Bis_phenolate_pyridineiridium_III_Complexes/2568907
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资源简介：
A bis(phenolate)pyridine pincer ligand (henceforth abbreviated
as ONO) has been employed to support a variety of iridium complexes
in oxidation states I, III, and IV. Complexes (ONO)IrL2Me (L = PPh3, PEt3) react with I2 to cleave the Ir–C bond and liberate MeI, apparently via
a mechanism beginning with electron transfer to generate an intermediate
Ir(IV) complex, which can be isolated and characterized for the case
L = PEt3. The PPh3 complex is transformed in
benzene at 65 °C to the corresponding phenyl complex, with loss
of methane, and subsequently to a species resulting from metalation
of a PPh3 ligand. Labeling and kinetics studies indicate
that PPh3 is the initial site of C–H activation,
even though the first observed product is that resulting from intermolecular
benzene activation. C–H activation of acetonitrile has also
been observed.
创建时间：
2011-12-26
