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Role of differential correlation energy in core ionization of pyrrole and pyridine
KTH, School of Biotechnology (BIO), Theoretical Chemistry.ORCID iD: 0000-0003-0007-0394
2005 (English)In: Journal of Electron Spectroscopy and Related Phenomena, ISSN 0368-2048, E-ISSN 1873-2526, Vol. 142, no 2, 163-171 p.Article in journal (Refereed) Published
Abstract [en]

DeltaHartree-Fock (DeltaHF) and DeltaKohn-Sham (DeltaKS) orbital theories are used to calculate C(1s) and N(1s) core electron binding energies and chemical shifts of pyrrole and pyridine molecules. As a result, combination of DeltaKS and B3LYP functional appears as a very promising approach for the determination of the core excitation/ionization energies. For the carbon series in pyridine, electronic correlation is essential in correctly predicting the relative shifts among carbon atoms. A strong dynamical differential correlation energy for carbon and nitrogen has been revealed and can be related to the large magnitude of electronic transfer from ligands to the core ionized site.

Place, publisher, year, edition, pages
2005. Vol. 142, no 2, 163-171 p.
Keyword [en]
pyrrole, pyridene, hybridization, electron-binding-energies, density-functional calculation, basis-sets, organic-compounds, chemical-shifts, molecules, excitation, atoms, spectroscopy, mechanisms
Identifiers
URN: urn:nbn:se:kth:diva-14501DOI: 10.1016/j.elspec.2004.09.027ISI: 000226763200011Scopus ID: 2-s2.0-11244323487OAI: oai:DiVA.org:kth-14501DiVA: diva2:332542
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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Luo, Yi

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