Journal
CHEMICAL PHYSICS LETTERS
Volume 496, Issue 4-6, Pages 351-355Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2010.07.054
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Funding
- Japan Society for the Promotion of Science [21300111]
- Ministry of Education, Culture, Sports, Science, and Technology [20038034, 20118002]
- Association for the Progress of New Chemistry
- Suntory Institute for Bioorganic Research
- Supercomputer Laboratory of Institute for Chemical Research
- Grants-in-Aid for Scientific Research [20038034, 20118002, 21300111] Funding Source: KAKEN
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The computational efficiency is improved for the solvation free energy when the calculation is restricted to the initial and final states of the solute insertion process (pure solvent and solution systems of interest). We explore the possibility of such 'end-point' calculations and assess the performance of several approximate free-energy functionals against benchmarks for amino-acid analogs in water. The performance is the best and the second, respectively, for the method of energy representation and the RISM (reference interaction site model)/partial-wave expansion supplemented by semi-empirical corrections for the excluded-volume and hydrogen-bonding effects, while the chemical accuracy is not achieved for the others. (C) 2010 Elsevier B.V. All rights reserved.
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