Abstract
A general procedure is developed for the computation of the total energies of molecules at their equilibrium geometries. Ab initio molecular orbital theory is used to calculate electronic energies by a composite method, utilizing large basis sets (including diffuse-sp, double-d and f-polarization functions) and treating electron correlation by Mo/ller–Plesset perturbation theory and by quadratic configuration interaction. The theory is also used to compute zero-point vibrational energy corrections. Total atomization energies for a set of 31 molecules are found to agree with experimental thermochemical data to an accuracy greater than 2 kcal mol−1 in most cases. Similar agreement is achieved for ionization energies, electron and proton affinities. Residual errors are assessed for the total energies of neutral atoms.
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Dates
Type | When |
---|---|
Created | 23 years ago (July 26, 2002, 9:10 a.m.) |
Deposited | 1 year, 6 months ago (Feb. 10, 2024, 4:32 a.m.) |
Indexed | 1 day, 19 hours ago (Aug. 19, 2025, 6:32 a.m.) |
Issued | 36 years, 3 months ago (May 15, 1989) |
Published | 36 years, 3 months ago (May 15, 1989) |
Published Print | 36 years, 3 months ago (May 15, 1989) |
@article{Pople_1989, title={Gaussian-1 theory: A general procedure for prediction of molecular energies}, volume={90}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.456415}, DOI={10.1063/1.456415}, number={10}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Pople, John A. and Head-Gordon, Martin and Fox, Douglas J. and Raghavachari, Krishnan and Curtiss, Larry A.}, year={1989}, month=may, pages={5622–5629} }