A-Band Absorption Spectrum of the ClSO Radical: Electronic Structure of the Sulfinyl Group.

ABSTRACT: Sulfur oxide species (RSO_x) play a critical role in many fields, ranging from biology to atmospheric chemistry. Chlorine-containing sulfur oxides may play a key role in sulfate aerosol formation in Venus' cloud layer by catalyzing the oxidation of SO to SO₂ via sulfinyl radicals (RSO). We present results from the gas-phase UV-vis transient absorption spectroscopy study of the simplest sulfinyl radical, ClSO, generated from the pulsed-laser photolysis of thionyl chloride at 248 nm (at 40 Torr of N₂ and 292 K). A weak absorption spectrum from 350 to 480 nm with a peak at 385 nm was observed, with partially resolved vibronic bands (spacing = 226 cm^-1), and a peak cross section σ(385 nm) = (7.6 ± 1.9) × 10^-20 cm². From ab ini

SUBMITTER: Chao W 

PROVIDER: S-EPMC10577680 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature