Evidence map›Paper›PMID 22360206›Full record

ArticleThe Journal of chemical physics2012

Correlations in liquid water for the TIP3P-Ewald, TIP4P-2005, TIP5P-Ewald, and SWM4-NDP models.

David J Huggins

Abstract read
In one paragraph

Article in The Journal of chemical physics, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

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19citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

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2 · The registry

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3 · Its place in the literature

Who cites it

19 citing papers in PubMed.

  1. Article
  2. Article
  3. Free Energy Density of a Fluid and Its Role in Solvation and Binding.Journal of chemical theory and computation · 2024
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  8. Review
  9. Article
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  11. Article
  12. Coupling all-atom molecular dynamics simulations of ions in water with Brownian dynamics.Proceedings. Mathematical, physical, and engineering sciences · 2016
    Article
  13. Article
  14. From molecular dynamics to Brownian dynamics.Proceedings. Mathematical, physical, and engineering sciences · 2014
    Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
4 · The record

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5 · Who and what money

Authors and funding

1 author.

David J HugginsCambridge Molecular Therapeutics Programme, Hutchison/MRC Research Centre, University of Cambridge, Hills Road, Cambridge, CB2 0XZ, United Kingdom. djh210@cam.ac.uk

Funding

Medical Research Council G0700651Medical Research Council G1001522Wellcome Trust 091058
6 · The paper itself

Abstract

Water is one of the simplest molecules in existence, but also one of the most important in biological and engineered systems. However, understanding the structure and dynamics of liquid water remains a major scientific challenge. Molecular dynamics simulations of liquid water were performed using the water models TIP3P-Ewald, TIP4P-2005, TIP5P-Ewald, and SWM4-NDP to calculate the radial distribution functions (RDFs), the relative angular distributions, and the excess enthalpies, entropies, and free energies. In addition, lower-order approximations to the entropy were considered, identifying the fourth-order approximation as an excellent estimate of the full entropy. The second-order and third-order approximations are ~20% larger and smaller than the true entropy, respectively. All four models perform very well in predicting the radial distribution functions, with the TIP5P-Ewald model providing the best match to the experimental data. The models also perform well in predicting the excess entropy, enthalpy, and free energy of liquid water. The TIP4P-2005 and SWM4-NDP models are more accurate than the TIP3P-Ewald and TIP5P-Ewald models in this respect. However, the relative angular distribution functions of the four water models reveal notable differences. The TIP5P-Ewald model demonstrates an increased preference for water molecules to act both as tetrahedral hydrogen bond donors and acceptors, whereas the SWM4-NDP model demonstrates an increased preference for water molecules to act as planar hydrogen bond acceptors. These differences are not uncovered by analysis of the RDFs or the commonly employed tetrahedral order parameter. However, they are expected to be very important when considering water molecules around solutes and are thus a key consideration in modelling solvent entropy.

Indexed as

Molecular Dynamics SimulationEntropyHydrogen BondingThermodynamicsWaterWater

Identifiers

PMID22360206
PMCPMC4766739

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.