Revisiting the Renner–Teller Effect in the X ̃²Π State of CCN: Pulsed Discharge-supersonic Jet Single Vibronic Level Emission Spectroscopy

Authors

Lloyd Godfrey Muzangwa, Marquette University
Scott Reid, Marquette UniversityFollow

Document Type

Article

Language

eng

Format of Original

4 p.

Publication Date

4-2015

Publisher

Elsevier

Source Publication

Journal of Molecular Spectroscopy

Source ISSN

0022-2852

Abstract

The CCN radical is a prototypical system for study of the Renner–Teller effect in its degenerate X ̃²Π ground state, with a number of experimental and theoretical studies carried out over the past 50 years. Most experimental studies have focused on the low-lying vibrational structure as observed in the high-resolution spectra of hot bands, or in emission. In this work, we have used pulsed-discharge supersonic-jet single vibronic level (SVL) emission spectroscopy from selected levels of the Ã²Δ state to probe the vibronic structure of X ̃²Π up to ∼6000 cm⁻¹ above the vibrationless level. Around 50 levels were assigned, and these were fit to a Renner–Teller Hamiltonian to derive a detailed set of spectroscopic constants. Our data are compared with the results of recent high level coupled cluster calculations.

Comments

Accepted version. Journal of Molecular Spectroscopy, Vol. 310 (April 2015): 105-108. DOI. © 2015 Elsevier. Used with permission.

Recommended Citation

Muzangwa, Lloyd Godfrey and Reid, Scott, "Revisiting the Renner–Teller Effect in the X ̃²Π State of CCN: Pulsed Discharge-supersonic Jet Single Vibronic Level Emission Spectroscopy" (2015). Chemistry Faculty Research and Publications. 506.
https://epublications.marquette.edu/chem_fac/506