science-softCon uv/vis+ photochemistry database;	www.photochemistry.org; (C) science-softCon 2021

Substance: sulfur oxide					Other Names: disulfur dioxide

Formula: O2S2; OSSO					CAS-No.: 126885-21-0	PubChem: CID 145835224

Study: uv absorption spectrum (mix of the 4 isomers)

                
Authors: Z. Wu, H. Wan, J. Xu, B. Lu, Y. Lu, A.K. Eckhardt, P.R. Schreiner, C. Xie, H. Guo, x. Zeng

Title: The near-UV absorber OSSO and its isomers

Journal/Source: Chem. Commun.,54, 4517-4520, (2018); https://doi.org/10.1039/C8CC00999F


Data: table, diagram 

Energy/Wavelength 225 - 900 nm

Resolution: 1 nm

Temperature: 12 K

Temperature dependence: no

Pressure/Concentration: 

Phase: matrix (N2)

pH:


Comments: syn-OSSO, anti-OSSO, and cyclic OS(=O)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. Subsequent UV light irradiation 
(365 nm) depletes syn-OSSO and anti-OSSO and yields a fourth isomer, syn-OSOS.