Infrared Spectrum and the Fundamental Frequency Assignments for Trifluoromethanethiol (CF3SH)

Abstract

Infrared spectral results for gaseous trifluoromethanethiol (CF₃SH) in the 3–22 μ range are presented. By comparison with methyl mercaptan (CH₃SH) and the isoelectronic molecule trifluoromethyl chloride (CF₃Cl), the following assignment, (in cm^—1 units), of the fundamentals has been made: v₁ = 1136; v₂ = 1179, 1167; v₃ = 463; v₄ = 521 (splitting not observed); v₅ = 763; v₆ = 342 (splitting not observed); v₇ = 2618; and v₉ = 540. The torsional mode v₈ was not observed.