Characterization of<i>cis</i>- and<i>trans</i>-HSSOH via Rotational Spectroscopy and Quantum-Chemical Calculations
作者:Monika Koerber、Oliver Baum、Thomas F. Giesen、Stephan Schlemmer、Josef Hahn、Jürgen Gauss
DOI:10.1021/ic802076f
日期:2009.3.2
Assisted by high-level quantum-chemical calculations, the cis and trans conformers of HSSOH have been unambiguously identified among the products of the flash-vacuumpyrolysis of tert-butylthiosulfinic acid S-tert-butylester by using rotational spectroscopy.
tert-butyl group. The assignment of the experimental wavenumbers has been supported by theoretical values obtained from ab initio calculations at the MP2(fc)/6-311G** level. Furthermore, the theoretical studies show that of all compounds RS2OR′ (R = R′ = H, Me; R = Me (H), R′ = H (Me)) the unbranched chain isomers RSSOR′ are energetically favored over the branched chain isomers. Relaxed potential energy