The near-UV absorber OSSO and its isomers
Zhuang Wu a, Huabin Wan a, Jian Xu a, Bo Lu a, Yan Lu a, Andre´ K. Eckhardt b, Peter R. Schreiner*b, Changjian Xie c, Hua Guo c and Xiaoqing Zeng *a（曾小庆）
a College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
b Institute of Organic Chemistry, Justus-Liebig University, Heinrich-Buff-Ring 17, Giessen 35392, Germany.
c Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, NM 87131, USA
Chem. Commun., 2018, 54, 4517--4520
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 S2⋯O2complex in Ar or N2at 15 K,syn-OSSO,anti-OSSO, andcyclicOS(