Beyond Born–Mayer: Improved Models for Short-Range Repulsion in ab Initio Force Fields
Abstract
Short-range repulsion within intermolecular force fields is conventionally described by either Lennard-Jones (A/r12) or Born–Mayer (A exp(-Br)) forms. Despite their widespread use, these simple functional forms are often unable to describe the interaction energy accurately over a broad range of intermolecular distances, thus creating challenges in the development of ab initio force fields and potentially leading to decreased accuracy and transferability. Herein, we derive a novel short-range functional form based on a simple Slater-like model of overlapping atomic densities and an iterated stockholder atom (ISA) partitioning of the molecular electron density. We demonstrate that this Slater–ISA methodology yields a more accurate, transferable, and robust description of the short-range interactions at minimal additional computational cost compared to standard Lennard-Jones or Born–Mayer approaches. Finally, we show how this methodology can be adapted to yield the standard Born–Mayer functional form while still retaining many of the advantages of the Slater-ISA approach.
- Authors:
-
- Theoretical Chemistry Institute and Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
- Department of Physics and Astronomy, Queen Mary University of London, London E1 4NS, United Kingdom
- Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, United Kingdom
- Publication Date:
- Research Org.:
- Univ. of Wisconsin, Madison, WI (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1299438
- Alternate Identifier(s):
- OSTI ID: 1259280; OSTI ID: 1433883
- Grant/Contract Number:
- SC0014059
- Resource Type:
- Published Article
- Journal Name:
- Journal of Chemical Theory and Computation
- Additional Journal Information:
- Journal Name: Journal of Chemical Theory and Computation Journal Volume: 12 Journal Issue: 8; Journal ID: ISSN 1549-9618
- Publisher:
- American Chemical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 74 ATOMIC AND MOLECULAR PHYSICS
Citation Formats
Van Vleet, Mary J., Misquitta, Alston J., Stone, Anthony J., and Schmidt, J. R. Beyond Born–Mayer: Improved Models for Short-Range Repulsion in ab Initio Force Fields. United States: N. p., 2016.
Web. doi:10.1021/acs.jctc.6b00209.
Van Vleet, Mary J., Misquitta, Alston J., Stone, Anthony J., & Schmidt, J. R. Beyond Born–Mayer: Improved Models for Short-Range Repulsion in ab Initio Force Fields. United States. https://doi.org/10.1021/acs.jctc.6b00209
Van Vleet, Mary J., Misquitta, Alston J., Stone, Anthony J., and Schmidt, J. R. Tue .
"Beyond Born–Mayer: Improved Models for Short-Range Repulsion in ab Initio Force Fields". United States. https://doi.org/10.1021/acs.jctc.6b00209.
@article{osti_1299438,
title = {Beyond Born–Mayer: Improved Models for Short-Range Repulsion in ab Initio Force Fields},
author = {Van Vleet, Mary J. and Misquitta, Alston J. and Stone, Anthony J. and Schmidt, J. R.},
abstractNote = {Short-range repulsion within intermolecular force fields is conventionally described by either Lennard-Jones (A/r12) or Born–Mayer (A exp(-Br)) forms. Despite their widespread use, these simple functional forms are often unable to describe the interaction energy accurately over a broad range of intermolecular distances, thus creating challenges in the development of ab initio force fields and potentially leading to decreased accuracy and transferability. Herein, we derive a novel short-range functional form based on a simple Slater-like model of overlapping atomic densities and an iterated stockholder atom (ISA) partitioning of the molecular electron density. We demonstrate that this Slater–ISA methodology yields a more accurate, transferable, and robust description of the short-range interactions at minimal additional computational cost compared to standard Lennard-Jones or Born–Mayer approaches. Finally, we show how this methodology can be adapted to yield the standard Born–Mayer functional form while still retaining many of the advantages of the Slater-ISA approach.},
doi = {10.1021/acs.jctc.6b00209},
journal = {Journal of Chemical Theory and Computation},
number = 8,
volume = 12,
place = {United States},
year = {Tue Jul 12 00:00:00 EDT 2016},
month = {Tue Jul 12 00:00:00 EDT 2016}
}
https://doi.org/10.1021/acs.jctc.6b00209
Web of Science
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Comment on “Using Kohn−Sham Orbitals in Symmetry-Adapted Perturbation Theory To Investigate Intermolecular Interactions”
journal, December 2001
- Jansen, Georg; Hesselmann, Andreas
- The Journal of Physical Chemistry A, Vol. 105, Issue 49