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Title: Development of Transferable Interaction Models for Water: IV. A Flexible, All-atom Polarizable Potential (TTM2-F) based on Geometry Dependent Charges derived from an Ab Initio Monomer Dipole Moment Surface

Abstract

In this work we examine the consequences of incorporating the ab-initio derived monomer potential energy surface and non-linear dipole surface of Partridge and Schwenke [J. Chem. Phys. 106, 4618 (1997)] into the previously developed TTM2-R model of Burnham et al. [J. Chem. Phys. xx. yyyy (2001)] in order to develop a new, all-atom polarizable, flexible model for water (TTM2-F). We found that the use of the non-linear dipole surface is essential in modeling the change in the internal geometry of interacting water molecules and, in particular, the increase in the internal H-O-H bend angle with cluster size. This is the first demonstration of a flexible model which shows an increase in the bending angle in clusters. An explanation for this behavior is presented using the concept of geometric polarizabilities . The model furthermore reproduces the n=2-6 cluster binding energies to within an RMS deviation of 0.05 kcal/mol per hydrogen bond with respect to the MP2 complete basis set estimates.

Authors:
;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
15002193
Report Number(s):
PNNL-SA-34728
KC0301020; TRN: US200408%%159
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Journal of Chemical Physics, 116(12):5115-5124
Additional Journal Information:
Journal Volume: 116; Journal Issue: 12
Country of Publication:
United States
Language:
English
Subject:
08 HYDROGEN; BENDING; DIPOLE MOMENTS; DIPOLES; GEOMETRY; HYDROGEN; MONOMERS; POTENTIAL ENERGY; SIMULATION; WATER

Citation Formats

Burnham, Christian J, and Xantheas, Sotiris S. Development of Transferable Interaction Models for Water: IV. A Flexible, All-atom Polarizable Potential (TTM2-F) based on Geometry Dependent Charges derived from an Ab Initio Monomer Dipole Moment Surface. United States: N. p., 2001. Web.
Burnham, Christian J, & Xantheas, Sotiris S. Development of Transferable Interaction Models for Water: IV. A Flexible, All-atom Polarizable Potential (TTM2-F) based on Geometry Dependent Charges derived from an Ab Initio Monomer Dipole Moment Surface. United States.
Burnham, Christian J, and Xantheas, Sotiris S. 2001. "Development of Transferable Interaction Models for Water: IV. A Flexible, All-atom Polarizable Potential (TTM2-F) based on Geometry Dependent Charges derived from an Ab Initio Monomer Dipole Moment Surface". United States.
@article{osti_15002193,
title = {Development of Transferable Interaction Models for Water: IV. A Flexible, All-atom Polarizable Potential (TTM2-F) based on Geometry Dependent Charges derived from an Ab Initio Monomer Dipole Moment Surface},
author = {Burnham, Christian J and Xantheas, Sotiris S},
abstractNote = {In this work we examine the consequences of incorporating the ab-initio derived monomer potential energy surface and non-linear dipole surface of Partridge and Schwenke [J. Chem. Phys. 106, 4618 (1997)] into the previously developed TTM2-R model of Burnham et al. [J. Chem. Phys. xx. yyyy (2001)] in order to develop a new, all-atom polarizable, flexible model for water (TTM2-F). We found that the use of the non-linear dipole surface is essential in modeling the change in the internal geometry of interacting water molecules and, in particular, the increase in the internal H-O-H bend angle with cluster size. This is the first demonstration of a flexible model which shows an increase in the bending angle in clusters. An explanation for this behavior is presented using the concept of geometric polarizabilities . The model furthermore reproduces the n=2-6 cluster binding energies to within an RMS deviation of 0.05 kcal/mol per hydrogen bond with respect to the MP2 complete basis set estimates.},
doi = {},
url = {https://www.osti.gov/biblio/15002193}, journal = {Journal of Chemical Physics, 116(12):5115-5124},
number = 12,
volume = 116,
place = {United States},
year = {2001},
month = {3}
}