Journal :   Asian Journal of Research in Chemistry

Volume No. :   4

Issue No. :  10

Year :  2011

Pages :   1622-1615

ISSN Print :  0974-4169

ISSN Online :  0974-4150


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Kinetics of Substitution of Cis-bis (Oxalato) Diaquochromate (III) with Glycine, DL-alanine and DL-Phenylalanine in Alkaline medium



Address:   Mushini Venkata Subba Rao1*, Volety Muralidhara Rao2 and Veluri Ananta Ramam2
1Department of Chemistry, G M R Institute of Technology, Rajam 532 127, Andhra Pradesh, India.
2School of Chemistry, Andhra University, Visakhapatnam 530 003, Andhra Pradesh, India.
*Corresponding Author
DOI No:

ABSTRACT:
The kinetics of interaction among amino acids such as Glycine, DL-alanine and DL-phenylalanine and cis-bis(oxalato)diaquochromate(III) has been studied spectrophotometrically in alkaline medium as a function of [Glycine], [DL-alanine] and [DL-phenylalanine]. The effect of pH, temperature and substrate is also studied. The substrate exists predominantly as the diaquospecies and amino acid (Glycine, DL-alanine and DL-phenylalanine) as the zwitterion at the experimental conditions. The substitution reaction has been found to proceed via two steps - amino acid dependent and amino acid independent paths, indicating that the substitution reaction occurs through Ia mechanism in the amino acid dependent path, and the dissociative mechanism in the independent path, showing the higher reactivity of single ended oxalate complex.
KEYWORDS:
Substitution, Cis-bis(oxalato)diaquochromate(III), amino acids, Alkaline medium, kinetics.
Cite:
Mushini Venkata Subba Rao, Volety Muralidhara Rao, Veluri Ananta Ramam. Kinetics of Substitution of Cis-bis (Oxalato) Diaquochromate (III) with Glycine, DL-alanine and DL-Phenylalanine in Alkaline medium. Asian J. Research Chem. 4(10): Oct., 2011; Page 1612-1615.
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