Kinetics and mechanisms of substitution reactions with sulphur-containing nucleophiles in aqueous acid solutions. II. Rates of reactions of some tetrahalopalladate(II) anions with some N-alkyl substituted thioureas

摘要: Abstract The rates and activation energy parameters of halide ligand substitution in PdX 2− 4 (X = Cl − , Br ), with N-alkyl substituted thioureas aqueous halo acid solutions have been determined for the first kinetically, distinguishable step. Ligand product composition is substantiated by analytical data. Low enthalpies an appreciably negative entropy accompany high reaction. rate law each case k obs [L], where L N-alkylsubstituted k, dependent constant at 25 °C.