Serially improved GTOs for molecular applications (SIGMA): Basis sets from H to Ne.
J Chem Phys
; 158(24)2023 Jun 28.
Article
em En
| MEDLINE
| ID: mdl-37358222
ABSTRACT
A new approach for generating Gaussian basis sets is reported and tested for atoms from H to Ne. The basis sets thus calculated, named SIGMA basis sets, range from DZ to QZ sizes and have the same composition per shell as Dunning basis sets but with different treatment of the contractions. The standard SIGMA basis sets and their augmented versions have proven to be very suitable for providing good results in atomic and molecular calculations. The performance of the new basis sets is analyzed in terms of total, correlation, and atomization energies, equilibrium distances, and vibrational frequencies in several molecules, and the results are compared at several computational levels with those obtained with the corresponding Dunning and other basis sets.
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MEDLINE
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En
Ano de publicação:
2023
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Article