A proposal for the structuring of water

In spite of much work, many of the properties of water remain puzzling. A fluctuating network of water molecules, with localised icosahedral symmetry, is proposed to exist derived from clusters containing, if complete, 280 fully hydrogen-bonded molecules. These are formed by the regular arrangement...

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Bibliographic Details
Published in:Biophysical chemistry 2000-01, Vol.83 (3), p.211-221
Main Author: Chaplin, M.F
Format: Article
Language:English
Subjects:
Amorphous water
Hydrogen Bonding
Icosahedral network
Low-density water
Models, Molecular
Molecular Structure
Thermodynamics
Water - chemistry
Water clusters
Water structure
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Summary:In spite of much work, many of the properties of water remain puzzling. A fluctuating network of water molecules, with localised icosahedral symmetry, is proposed to exist derived from clusters containing, if complete, 280 fully hydrogen-bonded molecules. These are formed by the regular arrangement of identical units of 14 water molecules that can tessellate locally, by changing centres, in three-dimensions and interconvert between lower and higher density forms. The structure allows explanation of many of the anomalous properties of water including its temperature–density and pressure–viscosity behaviour, the radial distribution pattern, the presence of both pentamers and hexamers, the change in properties and ‘two-state’ model on supercooling and the solvation properties of ions, hydrophobic molecules, carbohydrates and macromolecules. The model described here offers a structure on to which large molecules can be mapped in order to offer insights into their interactions.
ISSN:0301-4622
1873-4200
DOI:10.1016/S0301-4622(99)00142-8