Absorption spectroscopic investigations involving 4f-4f transitions to explore the kinetics of complexation of Zn(II) with Pr(III)-glutathione complex

The kinetics of complexation of Zn(II) with Pr2(GSH)2·(H2O)4 (GSH-glutathione) to form Pr2(GSH)2Zn(H2O)6 complex investigated at 30 °C indicated that the rate constants corresponding to all the 4f-4f bands were quite close and showed first order dependence, in terms of concentration of Zn(II) and Pr2(GSH)2·(H2O)4.