pH-Metric Method for Ligand Dissociation Constants of Mercaptotriazoles and Their Reactions.

Abstract

The proton ligand dissociation constants, log K_L of a few mercaptotriazoles and the stability constants of their complexes with bivalent metal ions have been determined using Bjerrum-Calvin pH titration technique as extended by Irving and Rossotti. The order of stability constants of metal complexes follows Irving-William series and the acid dissociation constant values of ligands are in the order L₁ > L₂ > L₃ > L₄·