Connections between the accuracy of rotational constants and equilibrium molecular structures

C Puzzarini, JF Stanton - Physical Chemistry Chemical Physics, 2023 - pubs.rsc.org
Rotational spectroscopy is the technique of choice for investigating molecular structures in
the gas phase. Indeed, rotational constants are strongly connected to the geometry of the …

Accuracy and interpretability: The devil and the holy grail. New routes across old boundaries in computational spectroscopy

C Puzzarini, J Bloino, N Tasinato, V Barone - Chemical reviews, 2019 - ACS Publications
The past decade has witnessed an increasing interaction between experiment and theory in
the field of molecular spectroscopy. On the computational side, ongoing developments of …

Coupled-cluster techniques for computational chemistry: The CFOUR program package

DA Matthews, L Cheng, ME Harding… - The Journal of …, 2020 - pubs.aip.org
An up-to-date overview of the CFOUR program system is given. After providing a brief
outline of the evolution of the program since its inception in 1989, a comprehensive …

Multiconfiguration self-consistent field and multireference configuration interaction methods and applications

PG Szalay, T Muller, G Gidofalvi, H Lischka… - Chemical …, 2012 - ACS Publications
The configuration interaction (CI) method is a general procedure to compute approximate
solutions to the electronic Schrödinger equation. The wave function is written as a linear …

Basis-set convergence of correlated calculations on water

T Helgaker, W Klopper, H Koch, J Noga - The Journal of chemical …, 1997 - pubs.aip.org
The basis-set convergence of the electronic correlation energy in the water molecule is
investigated at the second-order Mo/ller–Plesset level and at the coupled-cluster singles …

Gaussian basis sets for use in correlated molecular calculations. IV. Calculation of static electrical response properties

DE Woon, TH Dunning Jr - The Journal of chemical physics, 1994 - pubs.aip.org
An accurate description of the electrical properties of atoms and molecules is critical for
quantitative predictions of the nonlinear properties of molecules and of long‐range atomic …

Gaussian-4 theory

LA Curtiss, PC Redfern, K Raghavachari - The Journal of chemical …, 2007 - pubs.aip.org
The Gaussian-4 theory (G4 theory) for the calculation of energies of compounds containing
first-(Li–F), second-(Na–Cl), and third-row main group (K, Ca, and Ga–Kr) atoms is …

Use of approximate integrals in ab initio theory. An application in MP2 energy calculations

M Feyereisen, G Fitzgerald, A Komornicki - Chemical physics letters, 1993 - Elsevier
We use the resolution of the identify (RI) as convenient way to replace the use of four-index-
two-electron integrals with linear combinations of three-index integrals. The method is …

Gaussian basis sets for use in correlated molecular calculations. IX. The atoms gallium through krypton

AK Wilson, DE Woon, KA Peterson… - The Journal of chemical …, 1999 - pubs.aip.org
Valence correlation consistent and augmented correlation consistent basis sets have been
determined for the third row, main group atoms gallium through krypton. The methodology …

A complete basis set model chemistry. V. Extensions to six or more heavy atoms

JW Ochterski, GA Petersson… - The Journal of chemical …, 1996 - pubs.aip.org
The major source of error in most ab initio calculations of molecular energies is the
truncation of the one‐electron basis set. Extrapolation to the complete basis set second …