Dynamic electron correlation effect on conical intersections in photochemical ring-opening reaction of cyclohexadiene: MS-CASPT2 study

Toshifumi Mori, Shigeki Kato

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)

Abstract

A method to locate minimum energy conical intersection (MECI) points with the analytical derivative technique for multistate complete active space second-order perturbation theory is presented. The photochemical ring-opening reaction of cyclohexadiene (CHD) is revisited to examine the effect of dynamic electron correlation on MECI properties. The geometries as well as potential energy landscapes of CHD are found to change remarkably. The energy difference gradient (g) and interstate coupling (h) vectors consisting the branching plane of MECI are also strongly affected. These results indicate the importance of accurate potential energy surfaces for fully understanding photochemical reactions.

Original languageEnglish
Pages (from-to)97-100
Number of pages4
JournalChemical Physics Letters
Volume476
Issue number1-3
DOIs
Publication statusPublished - Jul 7 2009
Externally publishedYes

All Science Journal Classification (ASJC) codes

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

Fingerprint Dive into the research topics of 'Dynamic electron correlation effect on conical intersections in photochemical ring-opening reaction of cyclohexadiene: MS-CASPT2 study'. Together they form a unique fingerprint.

Cite this