On the Jahn-Teller effect in the X∼2E electronic ground state of CH3F+

• Verfasst von: Sarkar, Rudraditya [VerfasserIn]
• Verfasst von: Köppel, Horst [VerfasserIn]
• Titel: On the Jahn-Teller effect in the X∼2E electronic ground state of CH3F+
• Verf.angabe: Rudraditya Sarkar, S. Rajagopala Reddy, S. Mahapatra, H. Köppel
• Jahr: 2017
• Jahr des Originals: 2016
• Umfang: 13 S.
• Teil: volume:482
• Teil: year:2017
• Teil: pages:39-51
• Teil: extent:13
• Fussnoten: Gesehen am 28.08.2018 ; Im Titel ist „2“ und "+" hochgestellt, "∼" steht über "X", „3“ ist tiefgestellt ; Available online 9 September 2016
• Titel Quelle: Enthalten in: Chemical physics
• Ort Quelle: Amsterdam [u.a.] : Elsevier Science, 1973
• Jahr Quelle: 2017
• Band/Heft Quelle: 482(2017), Seite 39-51
• DOI: doi:10.1016/j.chemphys.2016.09.011
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Conical intersections
• Sach-SW: Jahn-Teller effect
• Sach-SW: Spin-orbit coupling
• Sach-SW: Vibronic coupling
• K10plus-PPN: 1580479901

Abstract

In view of recent experimental and theoretical developments, we revisit our earlier theoretical studies (Mahapatra et al., 2004, 2005) on the Jahn-Teller effect in the degenerate X∼2E electronic ground state of CH3F+. The electronic potential energy surfaces and the coupling surfaces are re-calculated employing state-of-the-art ab initio quantum chemistry methods. The vibronic Hamiltonian, constructed with the aid of multimode vibronic coupling theory and symmetry selection rules, is systematically extended to higher order in the Taylor series expansion and the parameters are carefully revised in the present study. First principles quantum dynamics study is carried out to calculate the vibronic eigenvalue spectrum of this degenerate electronic state of CH3F+. The vibronic energy levels are assigned and compared with the experimental pulsed-field-ionization zero-electron-kinetic energy (PFI-ZEKE) and one photon ZEKE spectra of CH3F+ and also with the earlier theoretical results reported in the literature.