Divide-and-conquer linear-scaling quantum chemical computations

H Nakai, M Kobayashi, T Yoshikawa… - The Journal of …, 2023 - ACS Publications
Fragmentation and embedding schemes are of great importance when applying quantum-
chemical calculations to more complex and attractive targets. The divide-and-conquer (DC) …

Toward a correct treatment of core properties with local hybrid functionals

M Haasler, TM Maier, M Kaupp - Journal of Computational …, 2023 - Wiley Online Library
In local hybrid functionals (LHs), a local mixing function (LMF) determines the position‐
dependent exact‐exchange admixture. We report new LHs that focus on an improvement of …

Development of linear-scaling relativistic quantum chemistry covering the periodic table

H Nakai - Bulletin of the Chemical Society of Japan, 2021 - academic.oup.com
Abstract This Award Account focuses on the author's studies on the theoretical
developments of two-component (2c) relativistic quantum chemistry calculations for large …

Beyond Electrons: Correlation and Self‐Energy in Multicomponent Density Functional Theory

C Holzer, YJ Franzke - ChemPhysChem, 2024 - Wiley Online Library
Abstract Post‐Kohn‐Sham methods are used to evaluate the ground‐state correlation
energy and the orbital self‐energy of systems consisting of multiple flavors of different …

Range Separation Method for Density Functional Theory Based on Two-Electron Infinite-Order Two-Component Hamiltonian

C Takashima, H Nakai - Journal of chemical theory and …, 2024 - ACS Publications
The range separation method for density functional theory (DFT) was extended to a two-
component relativistic theory based on the unitary transformation of one-and two-electron …

[HTML][HTML] Perturbative treatment of spin-orbit coupling within spin-free exact two-component theory

L Cheng, J Gauss - The Journal of Chemical Physics, 2014 - pubs.aip.org
This work deals with the perturbative treatment of spin-orbit-coupling (SOC) effects within the
spin-free exact two-component theory in its one-electron variant (SFX2C-1e). We investigate …

RAQET: Large‐scale two‐component relativistic quantum chemistry program package

M Hayami, J Seino, Y Nakajima… - Journal of …, 2018 - Wiley Online Library
The Relativistic And Quantum Electronic Theory (RAQET) program is a new software
package, which is designed for large‐scale two‐component relativistic quantum chemical …

Efficient semi-numerical implementation of relativistic exact exchange within the infinite-order two-component method using a modified chain-of-spheres method

TM Maier, Y Ikabata, H Nakai - Journal of chemical theory and …, 2019 - ACS Publications
We present an efficient implementation of relativistic exact exchange within the infinite-order
two-component method (IOTC) by employing a state-of-the-art seminumerical integration …

Relativistic local hybrid functionals and their impact on 1s core orbital energies

TM Maier, Y Ikabata, H Nakai - The Journal of Chemical Physics, 2020 - pubs.aip.org
In this work, we report the first relativistic density functional theory calculations using
relativistic local hybrid functionals. Besides outlining the construction of relativistic local …

Metal–ligand bonding situation in ruthenophanes containing multibridged cyclophanes

SE Galembeck, GF Caramori, A Misturini… - …, 2017 - ACS Publications
Cation− π interactions in a set of ruthenophanes [Ru (η6-C n H n)(NH3) 3] 2+(n= 16, 18, 20,
22, and 24)(1–9), containing multibridged cyclophanes as ligands, including [2.2] …