The importance of the dynamic sigma polarization (absent in methods where the skeleton is treated at a mean-field level) for the correct description of the V state of the ethene molecule has been recognized by many authors in the past. In this article, this physical effect is analyzed and it is seen as arising from the sum of two contributions: the polarization of the C-C bond and of the C-H bonds. In both cases it is described in a valence bond scheme and the types of excitations needed in a molecular orbital frame to introduce such effects are identified. The effect of the dynamic polarization on the spatial extent of the V state (<x^2>) is described. The analysis here reported has been used in a recent article (Angeli, J Comp Chem 2009, 30, 1319) for the accurate calculation of the V state and of its vertical excitation energy.

An analysis of the dynamic sigma polarization in the V state of ethene

ANGELI, Celestino
2010

Abstract

The importance of the dynamic sigma polarization (absent in methods where the skeleton is treated at a mean-field level) for the correct description of the V state of the ethene molecule has been recognized by many authors in the past. In this article, this physical effect is analyzed and it is seen as arising from the sum of two contributions: the polarization of the C-C bond and of the C-H bonds. In both cases it is described in a valence bond scheme and the types of excitations needed in a molecular orbital frame to introduce such effects are identified. The effect of the dynamic polarization on the spatial extent of the V state () is described. The analysis here reported has been used in a recent article (Angeli, J Comp Chem 2009, 30, 1319) for the accurate calculation of the V state and of its vertical excitation energy.
2010
Angeli, Celestino
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/1383875
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 25
  • ???jsp.display-item.citation.isi??? 25
social impact