Journal
JOURNAL OF CHEMICAL THEORY AND COMPUTATION
Volume 10, Issue 3, Pages 924-933Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ct401074s
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Funding
- U.S. Department of Energy, Office of Basic Energy Sciences [DE-SC0008666, DE-FG02-86ER13579]
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We present a new method for fitting potential energy surfaces in molecular-mechanics-like internal coordinates based on data from electronic structure calculations. The method should be applicable to chemical reactions involving either bond dissociation or isomerization and is illustrated here for bond dissociation, in particular the breaking of an O-H bond in methanol and the breaking of an N-H bond in dimethylamine. As compared to previously available systematic methods for fitting global potential energy surfaces, it extends the maximum size of the system than can be treated by at least an order of magnitude.
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