a-Ketoglutarate-dependent Fe(II)-containing dioxygenase enzymes catalyze oxygenation of substrates by 0 2 with concomitant oxygenation and decarboxylation of the cofactor to produce COz and Recently Chiou and Que have reported two studies in which Fe(I1) complexes of benzoylformate (BF) were prepared and characterized as possible models for such enzyme^.^^^ Reaction of these complexes with 0 2 resulted in
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