State-of-the-art local correlation methods enable affordable gold standard quantum chemistry for up to hundreds of atoms

PR Nagy - Chemical Science, 2024 - pubs.rsc.org
In this feature, we review the current capabilities of local electron correlation methods up to
the coupled cluster model with single, double, and perturbative triple excitations [CCSD (T)] …

Molecular Tailoring Approach for the Direct Estimation of Individual Noncovalent Interaction Energies in Molecular Systems

MB Ahirwar, SR Gadre… - The Journal of Physical …, 2024 - ACS Publications
The noncovalent interactions (NCIs) are omnipresent in chemistry, physics, and biology. The
study of such interactions offers insights into various physicochemical phenomena. Some …

Cluster-in-Molecule Local Correlation Method for Dispersion Interactions in Large Systems and Periodic Systems

W Li, Y Wang, Z Ni, S Li - Accounts of Chemical Research, 2023 - ACS Publications
Conspectus The noncovalent interactions, including dispersion interactions, control the
structures and stabilities of complex chemical systems, including host–guest complexes and …

Local Second-Order Møller–Plesset Theory with a Single Threshold Using Orthogonal Virtual Orbitals: Theory, Implementation, and Assessment

Z Wang, A Aldossary, T Shi, Y Liu, XS Li… - Journal of Chemical …, 2023 - ACS Publications
It has long been clear that electron correlation methods exhibit unphysical compute scalings
with molecular size, which has motivated the development of local correlation methods to …

Nonadiabatic Exciton Dynamics and Energy Gradients in the Framework of FMO-LC-TDDFTB

R Einsele, R Mitrić - Journal of Chemical Theory and Computation, 2024 - ACS Publications
We introduce a novel methodology for simulating the excited-state dynamics of extensive
molecular aggregates in the framework of the long-range corrected time-dependent density …

Use of caps in the auxiliary basis set formulation of the fragment molecular orbital method

DG Fedorov - Journal of Computational Chemistry, 2024 - Wiley Online Library
An auxiliary polarization formulation of the fragment molecular orbital (FMO) method is
developed, combining a basis set correction computed for capped isolated fragments with a …

Analytic gradient for time-dependent density functional theory combined with the fragment molecular orbital method

H Nakata, DG Fedorov - Journal of Chemical Theory and …, 2023 - ACS Publications
The analytic energy gradient of energy with respect to nuclear coordinates is derived for the
fragment molecular orbital (FMO) method combined with time-dependent density functional …

Excitation configuration analysis for divide-and-conquer excited-state calculation method using dynamical polarizability

R Nishimura, T Yoshikawa, K Sakata… - The Journal of Chemical …, 2024 - pubs.aip.org
The authors previously developed a divide-and-conquer (DC)-based non-local excited-state
calculation method for large systems using dynamical polarizability [Nakai and Yoshikawa …

The peptide bond: resonance increases bond order and complicates fragmentation

DG Fedorov - ChemPhysChem, 2024 - Wiley Online Library
The enhancement of the peptide bond order by a resonance in the lone pair of N and the π‐
bond of CO is analyzed. A decomposition of the bond order in terms of localized molecular …

Obtaining Robust Density Functional Tight-Binding Parameters for Solids across the Periodic Table

M Cui, K Reuter, JT Margraf - Journal of Chemical Theory and …, 2024 - ACS Publications
The density functional tight-binding (DFTB) approach allows electronic structure-based
simulations at length and time scales far beyond what is possible with first-principles …