Interpreting vibrationally resolved spectra of molecular dications (doubly positively charged molecules): HCl2+
- 20 July 1999
- journal article
- research article
- Published by Informa UK Limited in Molecular Physics
- Vol. 97 (1-2), 35-42
- https://doi.org/10.1080/00268979909482807
Abstract
Vibrationally resolved spectra of HCl2+ appear to show five vibrational levels for the X3Σ− ground electronic state, whereas calculations of vibrational levels supported by ab initio potential energy curves have been able to locate only three vibrational levels below the barrier; this discrepancy is resolved by considering vibrational states that the potential function supports in the continuum above the barrier maximum. A low resolution spectrum produced from first principles is compared with a spectrum obtained with threshold photoelectrons in coincidence (TPEsCO) spectroscopy, with agreement sufficient to suggest that care must be taken in the inversion of vibrational spectroscopic data for molecular dications to avoid generating potential functions that are too strongly bound.Keywords
This publication has 29 references indexed in Scilit:
- Investigation of the CS22+ dication using threshold photoelectrons coincidence spectroscopyChemical Physics, 1998
- The infrared spectrum of HCl2+ and its isotopomersChemical Physics Letters, 1996
- Photofragment spectroscopy and dissociation dynamics of N2+2: A 1Πu–X 1Σ+gThe Journal of Chemical Physics, 1994
- Threshold photoelectrons coincidence spectroscopy of doubly charged ions of hydrogen chloride and chlorineJournal of Physics B: Atomic, Molecular and Optical Physics, 1994
- Multiply charged moleculesPhysics Reports, 1993
- High-resolution laser photofragment spectrum of N2+2(1πu–1Σ+g)Journal of the Chemical Society, Faraday Transactions, 1990
- High-resolution Auger-electron spectrum of HCl and DClPhysical Review A, 1989
- The optical spectrum of the doubly charged molecular nitrogen ionJournal of Molecular Spectroscopy, 1985
- Photofragment spectroscopy ofPhysical Review A, 1983
- A NEW TRANSITION IN MOLECULAR NITROGENCanadian Journal of Physics, 1958