Abstract
The structure of an intermediate formed by reaction of nitrogen dioxide with hexacyanoferrate(III) ion is deduced to be a bridged binuclear complex, [Fe2(CN)9(NO)2]3–, on the basis of stoicheiometric, i.r., and Mossbauer evidence. A linear nitrosyl bridge is suggested. The other products, ammonia, carbon dioxide, and cyanogen all suggest that nitrogen dioxide oxidises a cyanide ligand to cyanate, which subsequently decomposes. The intermediate is formed by a disproportionate reaction between two of the [Fe(CN)6]3––NO2 adducts.
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