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Modelling Water: A Lifetime Enigma.

John F Ouyang1, Ryan P A Bettens2

  • 1Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543.

Chimia
|October 29, 2015
PubMed
Summary
This summary is machine-generated.

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Water models have evolved significantly since 1933, with three main philosophies identified: effective point charges, polarization, and ab initio calculations. Understanding these approaches is key to accurately simulating water

Area of Science:

  • Physical Chemistry
  • Computational Chemistry
  • Materials Science

Background:

  • The study of water, essential for life, has a long history of theoretical and computational modeling.
  • Despite extensive research, a complete understanding of liquid water's complex interactions remains elusive.
  • Over one hundred distinct water models have been developed since the initial Bernal-Fowler model in 1933.

Purpose of the Study:

  • To trace the historical evolution of water models.
  • To identify and categorize the core philosophies underpinning different water modeling approaches.
  • To establish criteria for developing future water models that accurately capture molecular interactions.

Main Methods:

  • Historical review of significant water models and their development.

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  • Analysis of three distinct philosophical approaches in water modeling: effective point charges, polarization, and ab initio calculations.
  • Appraisal of current water model capabilities and limitations.

    • Main Results:

    • Identification of three primary philosophies in water modeling: empirical models with effective point charges, models incorporating polarization for many-body effects, and ab initio methods for short-range interactions.
    • Demonstration of how these different philosophies address the complexities of water's behavior.
    • Highlighting the limitations of current models in fully capturing intricate molecular interactions.

    Conclusions:

    • The evolution of water models reflects a progression in computational power and theoretical understanding.
    • A comprehensive water model must integrate insights from different philosophical approaches to accurately represent molecular interactions.
    • Further development is needed to create models that fully capture the intricate dynamics of liquid water.