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THE INFRARED SPECTRA OF H₂S⁺ AND D₂S⁺ 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 very dilute mixture of H₂S or D₂S in neon is codeposited at 4.3 K with a beam of neon atoms that have been excited in a microwave discharge, the infrared spectrum of the resulting solid includes absorptions contributed by the corresponding cations. These assignments are supported both by earlier gas-phase observations and by the results of density functional calculations. The possible assignment of other, less prominent product absorptions to such species as the H₂S anion and SH⁺ will also be considered.