Effect of carboxamido N coordination to iron on the redox potential of low-spin non-heme iron centers with N,S coordination : Relevance to the iron site of nitrile hydratase

Noveron JC; Olmstead MM; Mascharak PK

Inorganic Chemistry, Vol.37, No.6, 1138-1139, 1998

Noveron JC, Olmstead MM, Mascharak PK

The redox parameters of [Fe(PyPepS)(2)](-), the first low-spin Fe(III) complex with both carboxamido N and thiolato S donors in the first coordination sphere, indicate significant stabilization of the +3 oxidation state of iron. Such stabilization could account for the reactivity of the iron center in nitrile hydratase.

Keywords:IRON(III) COMPLEXES;SULFUR CENTER;NONHEME;LIGAND;BREVIBACTERIUM;SPECTROSCOPY;DIOXYGEN;ENZYME;MODEL;ION