Title
Three-Body Expansion Of The Fragment Molecular Orbital Method Combined With Density-Functional Tight-Binding
Abstract
The three-body fragment molecular orbital (FMO3) method is formulated for density-functional tight-binding (DFTB). The energy, analytic gradient, and Hessian are derived in the gas phase, and the energy and analytic gradient are also derived for polarizable continuum model. The accuracy of FMO3-DFTB is evaluated for five proteins, sodium cation in explicit solvent, and three isomers of polyalanine. It is shown that FMO3-DFTB is considerably more accurate than FMO2-DFTB. Molecular dynamics simulations for sodium cation in water are performed for 100 ps, yielding radial distribution functions and coordination numbers. (C) 2017 Wiley Periodicals, Inc.
Year
DOI
Venue
2017
10.1002/jcc.24693
JOURNAL OF COMPUTATIONAL CHEMISTRY
Keywords
Field
DocType
fragment molecular orbital method, density-functional tight-binding, polarizable continuum model, many-body interaction, analytic derivative
Chemical physics,Tight binding,Fragment molecular orbital,Computational chemistry,Chemistry
Journal
Volume
Issue
ISSN
38
7
0192-8651
Citations 
PageRank 
References 
2
0.52
10
Authors
2
Name
Order
Citations
PageRank
Yoshio Nishimoto120.52
Dmitri G Fedorov213814.52