A novel ionophoretic technique in the study of binary and ternary metal-4-hydroxybenzoate complexes

Department of Chemistry, University of Allahabad, Allahabad-211 002, India E-mail : sumi07mar@yahoo.com Manuscript received 30 January 2004, revised 13 August 2004, accepted 11 January 2005 lonophoretic technique has been used for the study of FeIII/, CuII/, NiII/, CoII-4-hydroxybenzoate binary and FeIII/, CuII/, NiII/, CoII - 4-hydroxybenzoate NTA (nitrilotriacetic acid) ternary complexes. The stability constants of metal-4-hydroxybenzoate binary complexes are found to be 103·57, 102·46, 102·43 and 102.40 and the stability constants of metal-4-hydroxybcnzoate-NTA ternary complexes have been found to be 105·70, 105·65, 105·55 and 105.50 for Fem, CuII, NiII and CoII complexes respectively at µ = 0.1 M (NaCIO4) and 25°C.

Keywords

binary and ternary, lonophoretic technique

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