INFRARED SPECTRA OF NEUTRAL AND IONIC $SO_{2}H_{2}$ SPECIES TRAPPED IN SOLID NEON

Author Institution: Optical Technology Division, National Institute of Standards and TechnologyWhen a $Ne:H_{2}:SO_{2} = 600:10:1$ 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 $SO_{2}$ 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