Complex Formation of Indium(III) with Murexide and the Decomposition of Murexide in the Presence of Indium(III) in Acid Perchlorate Media

Kinetic and equilibrium data on the complex formation between In(III) and murexide are derived using stopped-flow method and also from the rate of decomposition of the ligand in acid perchlorate media. The rate of complex formation is independent of the acid concentration over the wide range of [H] between 0.001 and 0.5 M. The discrepancies of the stability constants obtained from the direct and the indirect methods are discussed.