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Formation Constants of Bivalent Metal Ions With Benzofuran-2-Carbohydrazide Schiff Base

Volume 17, Number 3

M. B. Halli1 and B. R. Badiger2

1Department of Chemistry, Gulbarga University, Gulbarga- 585 106 (India) 2H.K.E.'s Degree College, Shorapur (India)

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ABSTRACT:

The stability constants of 1:1 and 1:2 complexes formed between Cu+2, Ni+2, Zn+2, Co+2, Cd+2 and UO2+2 with Schiff base derived from condensation of benzofuran-2-carbohydrazide with 2-hydroxy-1-napthaldehyde has been determined by pH metric titration method as suggested by Irving-Rossotti. The titrations were carried out at four different ionic strengths viz. 0.05, 0.10, 0.15 and 0.20 M NaClO4 solution in non-aqueous medium 60:40% (v/v) alcohol-water and at constant temperature of 30±1 °C.

KEYWORDS:

Schiff base; proton-ligand; metal-ligand stability constants

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Halli M. B, Badiger B. R. Formation Constants of Bivalent Metal Ions With Benzofuran-2-Carbohydrazide Schiff Base. Orient J Chem 2001;17(3).

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Halli M. B, Badiger B. R. Formation Constants of Bivalent Metal Ions With Benzofuran-2-Carbohydrazide Schiff Base. Orient J Chem 2001;17(3). Available from: http://www.orientjchem.org/?p=16950

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