Laser-induced fluorescence of the C2H3O radical

Abstract

Laser‐induced single vibronic level fluorescence of the C₂H₃O radical is reported. The 0–0 band of the fluorescence lies at 28 798 cm⁻¹ (347.2 nm). The C–O and C–C stretching, and the C–C–O bending vibrational energies are 1560, 1150, and 530 cm⁻¹, respectively, in the ground electronic state, and 872, 1110 and 432 cm⁻¹, respectively, in the excited state. The lifetime of the excited state is 0.8 μsec. The double bond nature of C₂H₃O is more dominant in the C–O bond than in the C–C bond in the ground state. The C₂H₃O radical is found in the C₂H₄+O reaction, as well as in the CH₃CHO+F reaction.