Please use this identifier to cite or link to this item:
https://hdl.handle.net/2445/222725
Title: | Theoretical Prediction of Core-Level Binding Energies: Analysis of Unexpected Errors |
Author: | Sousa Romero, Carmen Bagus, Paul S. Illas i Riera, Francesc |
Keywords: | Aldehids Molècules Energia Aldehydes Molecules Energy |
Issue Date: | 8-Feb-2024 |
Publisher: | American Chemical Society |
Abstract: | The analysis of the C(1s) and O(1s) core-level binding energies (CLBEs) of selected molecules computed by means of total energy Hartree–Fock (ΔSCF-HF) differences shows that in some cases, the calculated values for the C(1s) are larger than the experiment, which is unexpected. The origin of these unexpected errors of the Hartree–Fock ΔSCF BEs is shown to arise from static, nondynamical, electron correlation effects which are larger for the ion than for the neutral system. Once these static correlation effects are included by using complete active space self-consistent field (CASSCF) wave functions that include internal correlation terms, the resulting ΔSCF BEs are, as expected, smaller than measured values. |
Note: | Reproducció del document publicat a: https://doi.org/10.1021/acs.jpca.3c07567 |
It is part of: | Journal of Physical Chemistry A, 2024, vol. 128, num.5, p. 895-901 |
URI: | https://hdl.handle.net/2445/222725 |
Related resource: | https://doi.org/10.1021/acs.jpca.3c07567 |
ISSN: | 1089-5639 |
Appears in Collections: | Articles publicats en revistes (Ciència dels Materials i Química Física) Articles publicats en revistes (Institut de Química Teòrica i Computacional (IQTCUB)) |
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