Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 14, Issue 36, Pages 12571-12579Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2cp41016h
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Funding
- grant agency of Ministry of Education (MSMT) [ME 10149]
- grant agency of GA CR [P208/12/0622]
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In this study interaction between glycine and cisplatin was explored. The structures were optimized in both gas phase and implicit water solution at the B3LYP/6-31G(p)/IEFPCM/UAKS computational level. Vibrational analysis confirms the corresponding character of all the complexes from examined reaction coordinates. The enthalpy and entropy contributions to Gibbs free energies were estimated from the vibrational frequencies and statistical canonical ensemble model. In the solution, several deprotonated forms were considered, and pK(a) values of the reactants and products were determined. The reaction Gibbs free energies and pK(a) values were used for determination of the transformed thermodynamic potential Delta G' with pH as a natural variable.
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