Electronic spectroscopy of resonance-stabilised C₆H₇ radicals

ABSTRACT

Electronic spectra of C₆H₇ radicals, α-hydrofulvenyl and cis/trans-1-vinyl-3-methylpropargyl, have been measured in the gas phase. A resonant two-colour, two-photon ionisation scheme was used after the radicals were produced in a supersonically cooled discharge source. The origin bands in D₁ (²A″) ← D₀ (²A″) transitions are observed at 18,734, 21,278 and 21,698 cm⁻¹, respectively. The assignment of the spectra is based on the calculated harmonic frequencies in the D₁ states and the available literature data.

KEYWORDS:

• Electronic spectroscopy
• resonance-stabilised radicals
• hydrocarbon discharge

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was funded by the Swiss National Science Foundation (Project 200020-140316/1).