Kinetics of the reactions of pentacyanonitrosylferrate(II) with mono- and diamino acids

The reaction of Fe(CN)₅NO^2? with glycine, α-alanine, β-alanine, γ-aminobutyric acid, ornithine and lysine were gas-volumetrically studied in a weakly-alkaline medium. The kinetic data show that the reactivity of the amino group depends on the basicity of the amine, on the behaviour of nucleophilic centers of the carbon chain, and on their steric positions.The kinetic results are compared to the data of the reactions of amino acids with nitrous acid and of the complex with aliphatic amines.