Accurate Prediction of One-Electron Reduction Potentials in Aqueous Solution by Variable-Temperature H-Atom Addition/Abstraction Methodology

0458510 - ÚOCHB 2017 RIV US eng J - Journal Article
Bím, Daniel - Rulíšek, Lubomír - Srnec, Martin
Accurate Prediction of One-Electron Reduction Potentials in Aqueous Solution by Variable-Temperature H-Atom Addition/Abstraction Methodology.
Journal of Physical Chemistry Letters. Roč. 7, č. 1 (2016), s. 7-13. ISSN 1948-7185
R&D Projects: GA ČR(CZ) GJ15-10279Y; GA ČR(CZ) GA14-31419S
Institutional support: RVO:61388963 ; RVO:61388955
Keywords : density functional theory * redox potentials * computational electrochemistry
Subject RIV: CF - Physical ; Theoretical Chemistry
Impact factor: 9.353, year: 2016

A robust and efficient theoretical approach for calculation of the reduction potentials of charged species in aqueous solution is presented. Within this approach, the reduction potential of a charged complex (with a charge Inl >= 2) is probed by means of the reduction potential of its neutralized (protonated/deprotonated) cognate, employing one or several H-atom addition/abstraction thermodynamic cycles. This includes a separation of one-electron reduction from protonation/deprotonation through the temperature dependence. The accuracy of the method has been assessed for the set of 15 transition-metal complexes that are considered as highly challenging systems for computational electrochemistry. Unlike the standard computational protocol(s), the presented approach yields results that are in excellent agreement with experimental electrochemical data. Last but not least, the applicability and limitations of the approach are thoroughly discussed.
Permanent Link: http://hdl.handle.net/11104/0258777