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Stability and stepwise association of rhodium(III) chloride with some amino acids

✍ Scribed by Omar Farooq; Naseer Ahmad

Book ID: 104149689
Publisher: Elsevier Science
Year: 1974
Weight: 224 KB
Volume: 57
Category: Article
ISSN: 0022-0728
DOI: 10.1016/s0022-0728(74)80014-8

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✦ Synopsis

Owing to the biological importance of amino acids and their related compounds, appreciable attention has been paid to the stability of transitionmetal complexes with amino acids 1~. Recent work in this laboratory on the mode of interaction of various amino acids with transition metals and with several platinum group metals has shown the likelihood of association of these metals with certain common amino acids including sulphur containing amino acids 5-15. The present communication deals with the results of composition and stability of certain amino acid complexes with trivalent rhodium. The studies are mainly based upon the pH-metric titration method in aqueous medium as suggested by Bjerrum 16 and modified by Albert iv. Potentiometric titrations were performed for each reported system herein. The relation, -AF ° = RT In K~ (where Ks = overall stability constant) was employed to compute the values of AF ° at 27°C. All studies were done under anaerobic conditions and in an oxygen-free atmosphere.

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