A theoretical study on electronic structures and spectroscopic properties of cyclopropane in ground and excited states

Xiaojing Wang, Seiichi Takami, Momoji Kubo, Akira Miyamoto

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Electronic structures and spectroscopic properties of cyclopropane in ground and excited states were studied by the density functional theory. Cyclopropane in ground state showed a geometric structure of D3h, while for the first excited states, the symmetry of optimum structure was C2v that exhibited an elongated C-C bond and two shortened ones. Several split vibrational spectroscopic terms for the excited states were predicated on the basis of a comparison with those for ground states of lower symmetry. The extremely small CH2 stretch frequency was closely related to the long C-C bond for the first excited states. The first optical absorption band of cyclopropane was indicated to be associated with the excitations from HOMO 3e′ orbitals to 4a′and 4e′ orbitals. The strong absorption bands were calculated as arising from the valence-shell transitions.

Original languageEnglish
Pages (from-to)7-14
Number of pages8
JournalChemical Physics
Volume279
Issue number1
DOIs
Publication statusPublished - 2002 May 15

Keywords

  • Cyclopropane
  • Density function theory
  • Electronic structure
  • Spectrum

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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