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Vol. 8, Issue 5 (2019)

A kinetic study on the complexation of Cu (II) with γ-aminobenzoic acid

Author(s):
Yogeshwar Sharma
Abstract:
A kinetic study on interaction of Cu(II) with γ-aminobenzoic acid has been investigated at 25, 30, 35 and 40± 0.05°C in the pH range 2.01-3.14, using Aminco Morrow Stopped Flow Spectrophotometer. The ionic strength was maintained at 0.1 M KNO3. The deprotonated form of γ-aminobenzoic acid is more reactive and the protonated form interacts only to a small extent. Kinetic results suggest that the ligand is not involved in the rate determining step which is, in fact, associated with the release of a water molecule from the shell of the metal ions prior to complexation with the ligand. Enthalpy, entropy of activation, energy of the molecule and heat of formation were also calculated. A mechanism consistent with the kinetic data has been suggested.
Pages: 773-778  |  355 Views  58 Downloads


The Pharma Innovation Journal
How to cite this article:
Yogeshwar Sharma. A kinetic study on the complexation of Cu (II) with γ-aminobenzoic acid. Pharma Innovation 2019;8(5):773-778.

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