http://www.cnr.it/ontology/cnr/individuo/prodotto/ID190254
Accuracy of basis-set extrapolation schemes for DFT-RPA correlation energies in molecular calculations (Articolo in rivista)
- Type
- Label
- Accuracy of basis-set extrapolation schemes for DFT-RPA correlation energies in molecular calculations (Articolo in rivista) (literal)
- Anno
- 2012-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1007/s00214-012-1278-8 (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- E. Fabiano, F. Della Sala (literal)
- Pagina inizio
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
- http://www.springerlink.com/content/q3p5263m47327676/ (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- National Nanotechnology Laboratory (NNL), Istituto di Nanoscienze-CNR, Via per Arnesano 16, 73100, Lecce, Italy
Center for Biomolecular Nanotechnologies (CBN) of the Italian Institute of Technology (IIT), Via Barsanti, 73010, Arnesano, Italy (literal)
- Titolo
- Accuracy of basis-set extrapolation schemes for DFT-RPA correlation energies in molecular calculations (literal)
- Abstract
- We construct a reference benchmark set for atomic and molecular random phase approximation (RPA) correlation energies in a density functional theory framework at the complete basis-set limit. This set is used to evaluate the accuracy of some popular extrapolation schemes for RPA all-electron molecular calculations. The results indicate that for absolute energies, accurate results, clearly outperforming raw data, are achievable with two-point extrapolation schemes based on quintuple- and sextuple-zeta basis sets. Moreover, we show that results in good agreement with the benchmark can also be obtained by using a semiempirical extrapolation procedure based on quadruple- and quintuple-zeta basis sets. Finally, we analyze the performance of different extrapolation schemes for atomization energies. (literal)
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