Kinetics and Mechanism of Interaction of Thiosemicarbazide with Di-μ-hydroxobis(1,10-phenanthroline) Dipalladium(II) Perchlorate in Aqueous Solution

摘要: The kinetics and mechanism of the interaction between thiosemicarbazide with di-μ-hydroxobis(1,10-phenanthroline)dipalladium(II) ion complex has been followed spectrophotometrically in pseudo first order conditions aqueous solution as a function [Pd(1,10-phen)(H2O)2]2+, [thiosemicarbazide], pH, temperature. reaction (TSC) at pH 6.5 monitored 240 nm. rate increases linearly increasing concentration studied range. second constants 102k2 are 27.01, 33.78, 40.23, 50.46 dm3 mol−1 s−1 20, 25, 30, 35○C, respectively, have calculated from slope k versus [thiosemicarbazide] plot by using Origin6.0 software. From experimental findings, an associative for substitution is proposed. activation parameters Eyring equation ΔH# 1= 46.72 ± 1.8 kJ mol−1, ΔS# −100.38 3.1JK−1mole−1support proposition. On basis ki...