New angles on standard force fields: Toward a general approach for treating atomic-level anisotropy

MJ Van Vleet, AJ Misquitta… - Journal of Chemical …, 2018 - ACS Publications
Nearly all standard force fields employ the “sum-of-spheres” approximation, which models
intermolecular interactions purely in terms of interatomic distances. Nonetheless, atoms in …

Development and implementation of atomically anisotropic first-principles force fields: A benzene case study

TD Janicki, MJ Van Vleet… - The Journal of Physical …, 2023 - ACS Publications
π-interactions are an important motif in chemical and biochemical systems. However, due to
their anisotropic electron densities and complex balance of intermolecular interactions …

Multipole-based force fields from ab initio interaction energies and the need for jointly refitting all intermolecular parameters

C Kramer, P Gedeck, M Meuwly - Journal of chemical theory and …, 2013 - ACS Publications
Distributed atomic multipole (MTP) moments promise significant improvements over point
charges (PCs) in molecular force fields, as they (a) more realistically reproduce the ab initio …

Beyond Born–Mayer: Improved models for short-range repulsion in ab initio force fields

MJ Van Vleet, AJ Misquitta, AJ Stone… - Journal of chemical …, 2016 - ACS Publications
Short-range repulsion within intermolecular force fields is conventionally described by either
Lennard-Jones (A/r 12) or Born–Mayer (A exp (− Br)) forms. Despite their widespread use …

Deriving force-field parameters from first principles using a polarizable and higher order dispersion model

KM Visscher, DP Geerke - Journal of chemical theory and …, 2019 - ACS Publications
In this work we propose a strategy based on quantum mechanical (QM) calculations to
parametrize a polarizable force field for use in molecular dynamics (MD) simulations. We …

[HTML][HTML] Preface: special topic: from quantum mechanics to force fields

JP Piquemal, KD Jordan - The Journal of Chemical Physics, 2017 - pubs.aip.org
This Special Topic issue entitled “From Quantum Mechanics to Force Fields” is dedicated to
the ongoing efforts of the theoretical chemistry community to develop a new generation of …

An efficient algorithm for multipole energies and derivatives based on spherical harmonics and extensions to particle mesh Ewald

AC Simmonett, FC Pickard, HF Schaefer… - The Journal of chemical …, 2014 - pubs.aip.org
Next-generation molecular force fields deliver accurate descriptions of non-covalent
interactions by employing more elaborate functional forms than their predecessors. Much …

Machine-learned molecular mechanics force fields from large-scale quantum chemical data

K Takaba, A Friedman, C Cavender, P Behara… - Chemical …, 2024 - pubs.rsc.org
The development of reliable and extensible molecular mechanics (MM) forcefields—fast,
empirical models characterizing the potential energy surface of molecular systems—is …

Atomic multipoles: Electrostatic potential fit, local reference axis systems, and conformational dependence

C Kramer, P Gedeck, M Meuwly - Journal of computational …, 2012 - Wiley Online Library
Currently, all standard force fields for biomolecular simulations use point charges to model
intermolecular electrostatic interactions. This is a fast and simple approach but has …

Physically-motivated force fields from symmetry-adapted perturbation theory

JG McDaniel, JR Schmidt - The Journal of Physical Chemistry A, 2013 - ACS Publications
We present a general methodology for generating accurate and transferable ab initio force
fields, employing the framework of symmetry adapted perturbation theory (SAPT). The …