15min:
INFRARED SPECTRA OF NEUTRAL AND IONIC SO2H2 SPECIES TRAPPED IN SOLID NEON.

MARILYN E. JACOX AND WARREN E. THOMPSON, Optical Technology Division, National Institute of Standards and Technology, Gaithersburg, MD 20899-8441.

When a Ne:H2:SO2 = 600:10:1 mixture was codeposited at 4.2 K with a beam of neon atoms that had been excited in a microwave discharge, the infrared spectrum of the resulting solid included new absorptions contributed by isomers of S(OH)2 and of its cation. In other experiments in which the neon atoms were not excited in a discharge but in which the SO2 was excited by 254 nm radiation, isomers of uncharged S(OH)2 and of HS(O)OH appeared. Isotopic substitution studies and density functional calculations support the infrared identifications.