Abstract
AbstractMolecular dynamics simulations involving 500 and 1000 molecules are reported for the ST2 [7] and MCY [8] potential. The thermodynamic state corresponds to a density of ρ = 1 gcm−3 and a temperature around T = 400 K. Although traditionally used, atom‐atom correlation functions are found to be inappropriate for a detailed discussion of the orientational structure. Therefore the complete analysis is based on the full angle‐dependent pair correlation function g(R, Ω1, Ω2, Ω12). In the case of MCY considerable distortion of the ideal tetrahedral picture is observed. Although a collective property, the Kirkwood g‐factor turns out to be a sensitive probe of the input potentials and differs by a factor of 3 as a consequence of the angle‐dependent short‐range forces of the MCY potential. The mutual consistence of local and asymptotic dielectric properties is carefully examined. Thus a unique dielectric constant of ϵMCY = 30 ± 5 is derived. Possible refinements of the MCY potential are discussed in order to bring the computed ϵMCY closer to the experimental value ϵexp = 51.
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Dates
Type | When |
---|---|
Created | 13 years, 1 month ago (July 30, 2012, 1:20 p.m.) |
Deposited | 1 year, 10 months ago (Oct. 20, 2023, 5:42 a.m.) |
Indexed | 1 month, 3 weeks ago (July 4, 2025, 8:26 a.m.) |
Issued | 42 years, 6 months ago (Feb. 1, 1983) |
Published | 42 years, 6 months ago (Feb. 1, 1983) |
Published Online | 15 years, 3 months ago (May 6, 2010) |
Published Print | 42 years, 6 months ago (Feb. 1, 1983) |
@article{Steinhauser_1983, title={On the Orientational Structure and Dielectric Properties of Water. A Comparison of ST2 and MCY Potential}, volume={87}, ISSN={0005-9021}, url={http://dx.doi.org/10.1002/bbpc.19830870212}, DOI={10.1002/bbpc.19830870212}, number={2}, journal={Berichte der Bunsengesellschaft für physikalische Chemie}, publisher={Wiley}, author={Steinhauser, Othmar}, year={1983}, month=feb, pages={128–142} }