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Predicting Small-Molecule Solvation Free Energies: An Informal Blind Test for Computational Chemistry
Abstract
Experimental data on the transfer of small molecules between vacuum and water are relatively sparse. This makes it difficult to assess whether computational methods are truly predictive of this important quantity or merely good at explaining what has been seen. To explore this, a prospective test was performed of two different methods for estimating solvation free energies: an implicit solvent approach based on the Poisson-Boltzmann equation and an explicit solvent approach using alchemical free energy calculations. For a set of 17 small molecules, root mean square errors from experiment were between 1.3 and 2.6 kcal/mol, with the explicit solvent free energy approach yielding somewhat greater accuracy but at greater computational expense. Insights from outliers and suggestions for future prospective challenges of this kind are presented.
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Golbraikh, A., & Tropsha, A. (2002) · Journal of Molecular Graphics and Modelling · doi:10.1016/s1093-3263(01)00123-1 · Cited by 3,735
Mobley, D. L., Chodera, J. D., & Dill, K. A. (2006) · The Journal of Chemical Physics · doi:10.1063/1.2221683 · Cited by 316
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Elder, L. H., & Onufriev, A. V. (2025) · The Journal of Physical Chemistry B · doi:10.1021/acs.jpcb.5c02263 · Cited by 2
Metadata
- Authors
- Nicholls, A., Mobley, D. L., Guthrie, J. P., Chodera, J. D., Bayly, C. I., Cooper, M. D., & Pande, V. S.
- Venue
- Journal of Medicinal Chemistry
- Publisher
- American Chemical Society (ACS)
- Published
- 2008-01-24
- Volume
- 51
- Issue
- 4
- Pages
- 769-779
- ISSN
- 0022-2623 (ISSN-L)
- 1520-4804
- OpenAlex
- W2068465600
- Cited by
- 275
- References
- 2
- FWCI
- 13.54
- Type
- journal article
- Language
- en
- Open access
- closed
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