Title
Hierarchical atom type definitions and extensible all-atom force fields.
Abstract
The extensibility of force field is a key to solve the missing parameter problem commonly found in force field applications. The extensibility of conventional force fields is traditionally managed in the parameterization procedure, which becomes impractical as the coverage of the force field increases above a threshold. A hierarchical atom-type definition (HAD) scheme is proposed to make extensible atom type definitions, which ensures that the force field developed based on the definitions are extensible. To demonstrate how HAD works and to prepare a foundation for future developments, two general force fields based on AMBER and DFF functional forms are parameterized for common organic molecules. The force field parameters are derived from the same set of quantum mechanical data and experimental liquid data using an automated parameterization tool, and validated by calculating molecular and liquid properties. The hydration free energies are calculated successfully by introducing a polarization scaling factor to the dispersion term between the solvent and solute molecules. (c) 2015 Wiley Periodicals, Inc.
Year
DOI
Venue
2016
10.1002/jcc.24244
JOURNAL OF COMPUTATIONAL CHEMISTRY
Keywords
Field
DocType
all-atom force field,atom types,extensibility,hydration free energy,organic compounds
Force field (physics),Scale factor,Quantum,Parameterized complexity,Parametrization,Computer science,Computational chemistry,Atom,Polarization (waves),Extensibility
Journal
Volume
Issue
ISSN
37.0
7
0192-8651
Citations 
PageRank 
References 
1
0.41
9
Authors
10
Name
Order
Citations
PageRank
Zhao Jin110.41
Chunwei Yang210.41
Fenglei Cao310.41
Feng Li4115.63
Zhifeng Jing510.41
Long Chen610.41
Zhe Shen732.82
Liang Xin810.41
Sijia Tong910.41
Huai Sun1043.44