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<b>Kinetics of substitution of cis-bis(malonato)diaquochromate(III) with glycine, DL-alanine and DL-phenylalanine in alkaline medium</b>

Venkata Subba Rao Mushini
V. Ananta Ramam
V. Muralidhara Rao


The kinetics of interaction among amino acids such as glycine, DL-alanine and DL-phenylalanine and cis-bis(malonato)diaquochromate(III) has been studied spectrophotometrically as a function of [glycine], [DL-alanine] and [DL-phenylalanine] in alkaline medium. The effect of pH, temperature and substrate was also studied. The substitution reaction has been found to proceed via two steps: amino acid dependent and amino acid independent path. In this process, it indicated that the substitution reaction occurs through an Ia mechanism in the amino acid dependent path and a dissociative mechanism in the independent path, showing the higher reactivity of single ended malonate complex.

KEY WORDS: Substitution, cis-bis(Malonato)diaquochromate(III), Amino acids, Alkaline medium

Bull. Chem. Soc. Ethiop. 2011, 25(1), 103-110.

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eISSN: 1726-801X
print ISSN: 1011-3924