Potentiometric Investigation on Co (II) and Nl (II) Complexes With Glycyl-Glycyl-Glycine Peptide at Different Ionic Strengths

P. J. Sondawale¹ and M. L. Narwade²

¹Government Polytechnic College, GadchiroH-442 605, India. ²Government Science College, Gadchiroli-442 605, India.

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ABSTRACT:

The proton ligand and metal ligand stability constants of Co (II) and Ni (II) complexes with Glycyl-Glycyl-Glycine peptide have been studied potentiometrically at different ionic strengths (27± 0.1 °C). The values of proton ligand stability constants (pK) and metal-ligands stability constants (logk) at various ionic strengths are utilised to estimate the thermodynamic stability constants at zero ionic strength and to know the exact nature of reaction mechanism of complexation equilibria.

KEYWORDS:

Proton ligand; metal ligand; equilibria

Article Publishing History

Received on: December 25, 1996