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K. T. Joshi ¹, J. M. Patel ¹, A. M. Pancholi ¹, D. A. Shukla ²

Affiliations
1 Department of Chemistry, Navjivan Science College, Dahod: 389 151, Gujarat, IN
2 Deparment of Biology, Navjivan Science College, Dahod: 389 151, Gujarat, IN

Abstract

Potentiometric studies have been carried out on transition metal complexes of Mn⁺², Co⁺², Ni⁺², Cu⁺², Zn⁺² with hydrazones synthesized from 4-amino benzoic acid hydrazide and 2-hydroxy acetophenone/2-hydroxy-4methyl acetophenone. The dissociation constants of ligand and formation constants of its metal complexes have been determined by Calvin-Bjerrum pH titration technique, as adopted by Irving and Rossotti at 27±0.1°C and at an ionic strength of 0.1M in 60:40 (v/v) dioxane water medium. The order of the stability of complexes is Cu⁺² > Ni⁺² > Co⁺² > Mn+2 > Zn⁺² for ligand AHEH and Co⁺² > Cu⁺² > Ni⁺² > Mn⁺² > Zn⁺² for AMEH respectively. All the metal complexes screened for their antibacterial activity. The result indicates that the growth of the tested organism was inhibited by most of the compounds.

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K. T. Joshi ¹, J. M. Patel ¹, A. M Pancholi ¹

Affiliations
1 Department of Chemistry, Navjivan Science College, Dahod (Gujarat), IN

Abstract

Potentiometric studies have been carried out on transition metal complexes of Mn⁺², Co⁺², Ni⁺², Cu⁺², Zn⁺² with hydrazones synthesized from 4-amino benzoic- acid hydrazide and 5-chloro-2- hydroxy acetophenone. The dissociation constants of ligand and formation constants of its metal complexes have been determined by Calvin-Bjerrum pH titration technique, as adopted by Irving and Rossotti at 27±0.1^oC and at an ionic strength of 0.1M in 60:40 (v/v) dioxane water medium. The order of the stability of complexes is Cu⁺² > Ni⁺² > Co⁺² > Mn⁺² > Zn⁺² for the ligand ACEH. All the metal complexes screened for their antibacterial activity. The result indicates that the growth of the tested organism was inhibited by most of the compounds.

Keywords

Transition Metal Ion Complexes, Potentiometric Study.

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