Systematic microsolvation approach with a cluster-continuum scheme and conformational sampling.

Autor: Simm GN; Laboratory of Physical Chemistry, ETH Zürich, Zürich, Switzerland., Türtscher PL; Laboratory of Physical Chemistry, ETH Zürich, Zürich, Switzerland., Reiher M; Laboratory of Physical Chemistry, ETH Zürich, Zürich, Switzerland.
Jazyk: angličtina
Zdroj: Journal of computational chemistry [J Comput Chem] 2020 May 05; Vol. 41 (12), pp. 1144-1155. Date of Electronic Publication: 2020 Feb 06.
DOI: 10.1002/jcc.26161
Abstrakt: Solvation is a notoriously difficult and nagging problem for the rigorous theoretical description of chemistry in the liquid phase. Successes and failures of various approaches ranging from implicit solvation modeling through dielectric continuum embedding and microsolvated quantum chemical modeling to explicit molecular dynamics highlight this situation. Here, we focus on quantum chemical microsolvation and discuss an explicit conformational sampling ansatz to make this approach systematic. For this purpose, we introduce an algorithm for rolling and automated microsolvation of solutes. Our protocol takes conformational sampling and rearrangements in the solvent shell into account. Its reliability is assessed by monitoring the evolution of the spread and average of the observables of interest.
(© 2020 Wiley Periodicals, Inc.)
Databáze: MEDLINE
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