Bulletin of the Chemical Society of Ethiopia (Jun 2004)
<b>Determination of stability constants of iron(III) and chromium(III)-nitrilotriacetate-methyl cysteine mixed complexes by electrophoretic technique</b>
Abstract
The stability constants of Fe(III) and Cr(III) with methyl cysteine and nitrilotriacetate (NTA) were determined by paper electrophoretic technique. Beside binary ternary complexes have also been studied, in which nitrilotriacetate and methyl cysteine acts as primary and secondary ligand, respectively. The stability constants of mixed ligand complexes metal (M)-nitrilotriacetate-methyl cysteine have been found to be 5.72 plus or minus 0.09 and 5.54 plus or minus 0.11 (log K values) for Fe(III) and Cr(III) complexes, respectively, at 35 oC and ionic strength 0.1 M.
