Software update: The ORCA program system—Version 5.0

F Neese - Wiley Interdisciplinary Reviews: Computational …, 2022 - Wiley Online Library
Abstract Version 5.0 of the ORCA quantum chemistry program suite was released in July
2021. ORCA 5.0 represents a major improvement over all previous versions of ORCA and …

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)] …

[HTML][HTML] The ORCA quantum chemistry program package

F Neese, F Wennmohs, U Becker… - The Journal of chemical …, 2020 - pubs.aip.org
In this contribution to the special software-centered issue, the ORCA program package is
described. We start with a short historical perspective of how the project began and go on to …

[HTML][HTML] A new near-linear scaling, efficient and accurate, open-shell domain-based local pair natural orbital coupled cluster singles and doubles theory

M Saitow, U Becker, C Riplinger, EF Valeev… - The Journal of chemical …, 2017 - pubs.aip.org
The Coupled-Cluster expansion, truncated after single and double excitations (CCSD),
provides accurate and reliable molecular electronic wave functions and energies for many …

[HTML][HTML] SparseMaps—A systematic infrastructure for reduced scaling electronic structure methods. V. Linear scaling explicitly correlated coupled-cluster method with …

F Pavošević, C Peng, P Pinski, C Riplinger… - The Journal of …, 2017 - pubs.aip.org
In this work, we present a linear scaling formulation of the coupled-cluster singles and
doubles with perturbative inclusion of triples (CCSD (T)) and explicitly correlated geminals …

Local energy decomposition of open-shell molecular systems in the domain-based local pair natural orbital coupled cluster framework

A Altun, M Saitow, F Neese… - Journal of chemical theory …, 2019 - ACS Publications
Local energy decomposition (LED) analysis decomposes the interaction energy between
two fragments calculated at the domain-based local pair natural orbital CCSD (T)(DLPNO …

Delocalisation of photoexcited triplet states probed by transient EPR and hyperfine spectroscopy

S Richert, CE Tait, CR Timmel - Journal of Magnetic Resonance, 2017 - Elsevier
Photoexcited triplet states play a crucial role in photochemical mechanisms: long known to
be of paramount importance in the study of photosynthetic reaction centres, they have more …

Effect of electron correlation on intermolecular interactions: a pair natural orbitals coupled cluster based local energy decomposition study

A Altun, F Neese, G Bistoni - journal of chemical theory and …, 2018 - ACS Publications
The development of post-Hartree–Fock (post-HF) energy decomposition schemes that are
able to decompose the HF and correlation components of the interaction energy into …

[PDF][PDF] Orca

F Neese - An ab initio, density functional and semiempirical …, 2009 - researchgate.net
- An ab initio, DFT and semiempirical SCF-MO package - Version 4.1.2 Design and Scientific
Directorship: Frank Neese Technical D Page 1 ORCA - An ab initio, DFT and semiempirical …

Thermal half-lives of azobenzene derivatives: Virtual screening based on intersystem crossing using a machine learning potential

S Axelrod, E Shakhnovich… - ACS Central …, 2023 - ACS Publications
Molecular photoswitches are the foundation of light-activated drugs. A key photoswitch is
azobenzene, which exhibits trans–cis isomerism in response to light. The thermal half-life of …