Infrared Spectrum of Methylsilyl-d3-Acetylene

Abstract

The near‐ and far‐infrared spectra are reported for the molecule D₃SiC≡CCH₃ and the far‐infrared spectrum for H₃SiC≡CCH₃, supplementing earlier work. All of the infrared‐active vibrations have been found and assigned to normal modes. The Q branches of most of the perpendicular bands have been resolved and rotationally assigned. Coriolis coupling constants have been calculated.