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Title: Kinetics of direct bimolecular substitution reaction of a cis-platinum(II) complex with piperidine in water/alcohol mixtures
Authors: Gholami, M R
Talebi, B A
Issue Date: Dec-2002
Publisher: NISCAIR-CSIR, India
Abstract: Kinetics of direct bimolecular substitution reaction of cis-[Pt(SEt2)2 Cl2] with piperidine has been studied in water-methanol,-ethanol and - 2-propanol mi xtures. Modeling of second order rate constants with respect to quasi-independent solvent parameters such as π* (dipolarity/polarizability), α(HBD acidity) & β ( HBA basicity) has been carried out. Single-parameter models are not sufficient to explain the observed anomaly that occurs in the reaction rate. Because of opposite effects of π* and α, β on the reaction rate, this behaviour could be understood better using dual-parameter models of these parameters. Coefficients of parameters in final models show that dipolarity/polarizability parameter is more effective than the others in this reaction. Less negative effects of α on the reaction rate compared to β indicate that a HBD interaction could exist between the complex and protic solvents.
Page(s): 2522-2525
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.41A(12) [December 2002]

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