Energy-based molecular fragmentation methods

MA Collins, RPA Bettens - Chemical reviews, 2015‏ - ACS Publications
1.1 Objectives A major objective of theoretical and computational chemistry is the calculation
of the energy and properties of molecules, so that chemical reactivity and material properties …

Accurate composite and fragment-based quantum chemical models for large molecules

K Raghavachari, A Saha - Chemical reviews, 2015‏ - ACS Publications
The last three decades have seen dramatic progress in the development and application of
ab initio quantum chemical methods. The binding energies and thermodynamic properties of …

Delocalization error poisons the density-functional many-body expansion

DR Broderick, JM Herbert - Chemical Science, 2024‏ - pubs.rsc.org
The many-body expansion is a fragment-based approach to large-scale quantum chemistry
that partitions a single monolithic calculation into manageable subsystems. This technique is …

Fragment quantum mechanical method for large-sized ion–water clusters

J Liu, LW Qi, JZH Zhang, X He - Journal of chemical theory and …, 2017‏ - ACS Publications
Fragmentation methods have been widely studied for computing quantum mechanical (QM)
energy of medium-sized water clusters, but less attention has been paid to large-sized ion …

Trouble with the many-body expansion

JF Ouyang, MW Cvitkovic… - Journal of chemical theory …, 2014‏ - ACS Publications
Longstanding conventional wisdom dictates that the widely used Many-Body Expansion
(MBE) converges rapidly by the four-body term when applied to large chemical systems. We …

[HTML][HTML] The many-body expansion for metals. I. The alkaline earth metals Be, Mg, and Ca

J Mato, D Tzeli, SS Xantheas - The Journal of Chemical Physics, 2022‏ - pubs.aip.org
We examine the many-body expansion (MBE) for alkaline earth metal clusters, Be n, Mg n,
Ca n (n= 4, 5, 6), at the Møller–Plesset second order perturbation theory, coupled-cluster …

Analytic gradient for density functional theory based on the fragment molecular orbital method

KR Brorsen, F Zahariev, H Nakata… - Journal of Chemical …, 2014‏ - ACS Publications
The equations for the response terms for the fragment molecular orbital (FMO) method
interfaced with the density functional theory (DFT) gradient are derived and implemented …

A fragment quantum mechanical method for metalloproteins

M Xu, X He, T Zhu, JZH Zhang - Journal of chemical theory and …, 2019‏ - ACS Publications
An accurate energy calculation of metalloprotein is of crucial importance and also a
theoretical challenge. In this work, a metal molecular fractionation with conjugate caps …

Toward Accurate Prediction of Ion Mobility in Organic Semiconductors by Atomistic Simulation

H Nakata, H Kitoh-Nishioka, W Sakai… - Journal of Chemical …, 2023‏ - ACS Publications
A multiscale scheme (MLMS: Multi-Level Multi-Scale) to predict the ion mobility (μ) of
amorphous organic semiconductors is proposed, which was successfully applied to the hole …

Fragmentation-based decomposition of a metalloenzyme–substrate interaction: a case study for a lytic polysaccharide monooxygenase

J Hellmers, ED Hedegård… - The Journal of Physical …, 2022‏ - ACS Publications
We present a novel decomposition scheme for electronic interaction energies based on the
flexible formulation of fragmentation schemes through fragment combination ranges (FCRs; …