Solvation thermodynamics of neutral and charged solutes using the solvation‐layer interface condition continuum dielectric model
Abstract
Abstract We demonstrate that the solvation‐layer interface condition (SLIC) continuum dielectric model for molecular electrostatics, combined with a simple solvent‐accessible‐surface‐area (SASA)‐proportional model for nonpolar solvent effects, accurately predicts solvation entropies of neutral and charged small molecules. The SLIC/SASA model has only seven fitting parameters in total and achieves this accuracy using a training set with only 20 compounds. Despite this simplicity, solvation free energies and entropies are nearly as accurate as those predicted by the more sophisticated Langevin dipoles solvation model. Surprisingly, the model automatically reproduces the negligible contribution of electrostatics to the solvation of hydrophobic compounds. Opportunities for improvement include nonpolar solvation, anion solvation entropies, and heat capacities. More molecular realism may be needed for these quantities. To enable a future, explicit‐solvent‐based assessment of the SLIC/SASA implicit‐solvent model, we predict solvation entropies for the Mobley test set, which are available as Supporting Information.
- Authors:
-
- Department of Mechanical Engineering Northeastern University Boston Massachusetts
- Department of Physics Northeastern University Boston Massachusetts
- Department of Computer Science SUNY Buffalo Buffalo New York
- GlaxoSmithKline Collegeville Pennsylvania
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1479564
- Resource Type:
- Publisher's Accepted Manuscript
- Journal Name:
- International Journal of Quantum Chemistry
- Additional Journal Information:
- Journal Name: International Journal of Quantum Chemistry Journal Volume: 119 Journal Issue: 1; Journal ID: ISSN 0020-7608
- Publisher:
- Wiley Blackwell (John Wiley & Sons)
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Mehdizadeh Rahimi, Ali, Molavi Tabrizi, Amirhossein, Goossens, Spencer, Knepley, Matthew G., and Bardhan, Jaydeep P. Solvation thermodynamics of neutral and charged solutes using the solvation‐layer interface condition continuum dielectric model. United States: N. p., 2018.
Web. doi:10.1002/qua.25771.
Mehdizadeh Rahimi, Ali, Molavi Tabrizi, Amirhossein, Goossens, Spencer, Knepley, Matthew G., & Bardhan, Jaydeep P. Solvation thermodynamics of neutral and charged solutes using the solvation‐layer interface condition continuum dielectric model. United States. https://doi.org/10.1002/qua.25771
Mehdizadeh Rahimi, Ali, Molavi Tabrizi, Amirhossein, Goossens, Spencer, Knepley, Matthew G., and Bardhan, Jaydeep P. Fri .
"Solvation thermodynamics of neutral and charged solutes using the solvation‐layer interface condition continuum dielectric model". United States. https://doi.org/10.1002/qua.25771.
@article{osti_1479564,
title = {Solvation thermodynamics of neutral and charged solutes using the solvation‐layer interface condition continuum dielectric model},
author = {Mehdizadeh Rahimi, Ali and Molavi Tabrizi, Amirhossein and Goossens, Spencer and Knepley, Matthew G. and Bardhan, Jaydeep P.},
abstractNote = {Abstract We demonstrate that the solvation‐layer interface condition (SLIC) continuum dielectric model for molecular electrostatics, combined with a simple solvent‐accessible‐surface‐area (SASA)‐proportional model for nonpolar solvent effects, accurately predicts solvation entropies of neutral and charged small molecules. The SLIC/SASA model has only seven fitting parameters in total and achieves this accuracy using a training set with only 20 compounds. Despite this simplicity, solvation free energies and entropies are nearly as accurate as those predicted by the more sophisticated Langevin dipoles solvation model. Surprisingly, the model automatically reproduces the negligible contribution of electrostatics to the solvation of hydrophobic compounds. Opportunities for improvement include nonpolar solvation, anion solvation entropies, and heat capacities. More molecular realism may be needed for these quantities. To enable a future, explicit‐solvent‐based assessment of the SLIC/SASA implicit‐solvent model, we predict solvation entropies for the Mobley test set, which are available as Supporting Information.},
doi = {10.1002/qua.25771},
journal = {International Journal of Quantum Chemistry},
number = 1,
volume = 119,
place = {United States},
year = {Fri Oct 12 00:00:00 EDT 2018},
month = {Fri Oct 12 00:00:00 EDT 2018}
}
https://doi.org/10.1002/qua.25771
Web of Science
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