Abstract
A novel oxygen insertion reaction by molecular oxygen into an aromatic C–H bond in benzoato iron(II) complexes [FeII{HB(3-Ph-5-Mepz)3}(η1-O2CC6H4-p-X)(3-Ph-5-MepzH)] (2a (X=Cl), 2b (X=H), and 2c (X=OMe)) is described. The structures of the hydroxylated complexes ▪ (3a (X=Cl), 3b (X=H), and 3c (X=OMe)) were determined by X-ray crystallography and other spectroscopic characterizations were performed; one of the phenyl rings in the hydrotris(pyrazolyl)borate ligand was hydroxylated. A new purple colored iron(III) complex ▪ (4), which was obtained by the reaction of 3a with base, is also characterized.
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