Now showing items 1-5 of 5
Basis set consistent revision of the S22 test set of noncovalent interaction energies
(Georgia Institute of Technology, 2010-03)
The S22 test set of interaction energies for small model complexes [ Phys. Chem. Chem. Phys. 8, 1985 (2006) ] has been very valuable for benchmarking new and existing methods for noncovalent interactions. However, the basis ...
Quadratically convergent algorithm for orbital optimization in the orbital-optimized coupled-cluster doubles method and in orbital-optimized second-order Møller-Plesset perturbation theory
(Georgia Institute of Technology, 2011-09)
Using a Lagrangian-based approach, we present a more elegant derivation of the equations necessary for the variational optimization of the molecular orbitals (MOs) for the coupled-cluster doubles (CCD) method and second-order ...
Density fitting and Cholesky decomposition approximations in symmetry-adapted perturbation theory: Implementation and application to probe the nature of π-π interactions in linear acenes
(Georgia Institute of Technology, 2010-05)
Density fitting (DF) approximations have been used to increase the efficiency of several quantum mechanical methods. In this work, we apply DF and a related approach, Cholesky decomposition (CD), to wave function-based ...
Density fitting of intramonomer correlation effects in symmetry-adapted perturbation theory
(Georgia Institute of Technology, 2010-07)
Symmetry-adapted perturbation theory (SAPT) offers insight into the nature of intermolecular interactions. In addition, accurate energies can be obtained from the wave function-based variant of SAPT provided that intramonomer ...
Basis set convergence of the coupled-cluster correction, delta(CCSD(T))(MP2): Best practices for benchmarking non-covalent interactions and the attendant revision of the S22, NBC10, HBC6, and HSG databases
(Georgia Institute of Technology, 2011-11)
In benchmark-quality studies of non-covalent interactions, it is common to estimate interaction energies at the complete basis set (CBS) coupled-cluster through perturbative triples [CCSD(T)] level of theory by adding to ...