Journal article

Publication year: 2018

Pages: 4517-4520

Journal: Chemical Communications

Volume number: 54

Issue number: 36

ISSN: 1359-7345

DOI Link: https://doi.org/10.1039/c8cc00999f

Publisher: Royal Society of Chemistry

Abstract: 
Disulfur dioxide, OSSO,has been proposed as the enigmatic "near-UV absorber'' in the yellowish atmosphere of Venus. However, the fundamentally important spectroscopic properties and photochemistry of OSSO are scarcely documented. By either condensing gaseous SO or 266 laser photolysis of an S-2 center dot center dot center dot O-2 complex in Ar or N-2 at 15 K, syn-OSSO, anti-OSSO, and cyclic OS(QO)S were identified by IR and UV/Vis spectroscopy for the first time. The observed absorptions (lambda(max)) for OSSO at 517 and 390 nm coincide with the near-UV absorption (320-400 nm) found in the Venus clouds by photometric measurements with the Pioneer Venus orbiter. Subsequent UV light irradiation (365 nm) depletes syn-OSSO and anti-OSSO and yields a fourth isomer, syn-OSOS, with concomitant dissociation into SO2 and elemental sulfur.

Harvard Citation style: Wu, Z., Wan, H., Xu, J., Lu, B., Lu, Y., Eckhardt, A., et al. (2018) The near-UV absorber OSSO and its isomers, Chemical Communications, 54(36), pp. 4517-4520. https://doi.org/10.1039/c8cc00999f

APA Citation style: Wu, Z., Wan, H., Xu, J., Lu, B., Lu, Y., Eckhardt, A., Schreiner, P., Xie, C., Guo, H., & Zeng, X. (2018). The near-UV absorber OSSO and its isomers. Chemical Communications. 54(36), 4517-4520. https://doi.org/10.1039/c8cc00999f