Stabilities,solubility, and kinetics and mechanism for formation and hydrolysis of some palladium(II)and platinum(II) iodo complexes in aqueous solution
Institution:
1. Department of Chemistry, King Abdulaziz University, Jeddah 21589, Saudi Arabia;2. Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah 21589, Saudi Arabia;3. Chemistry Department, Faculty of Science, Minia University, Minia, Egypt
Abstract:
Complex formation between Pd(II), Pt(II) and iodide has been studied at 25 °C for an aqueous 1.00 M perchloric acid medium. Measurements of the solubility of PdI2(s) in aqueous mercury(II) perchlorate and of AgI(s) and PdI2(s) in aqueous solutions of Pd2+(aq) and Ag+(aq) gave the solubility product of PdI2(s) as Kso=(7±3) × 10−32 M3, which is much smaller than previous literature values.The stability constants β1=MI(H2O)3+]/(M(H2O)42+]I−]) for the two systems were obtained as the ratio between rate constants for the forward and reverse reactions of (i).
