The Photolysis of Matrix Isolated cis -Thionylimide. 1. The Identification and Infrared Spectra of cis -HOSN, HSNO, and SNO

Abstract

cis-HNSO has been photolyzed in argon matrices using a medium pressure mercury lamp. Examination of the infrared spectra has revealed the presence of four photolysis products. With the aid of isotopic substitution these species have been identified as cis-HOSN, cis-HSNO, trans-HSNO, and SNO, all previously unknown. Assignments have been made for all four products and force fields calculated for cis-HOSN and trans-HSNO. The following reaction scheme has been postulated for the photolysis induced process: cis-HNSO → cis-HOSN → cis-HSNO + trans-HSNO → SNO. The extent of this reaction sequence has been found to depend on reaction time and photolysis energy.