# THE 614 nm SUPERSONIC JET SPECTRUM OF THIOACETALDEHYDE

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 Title: THE 614 nm SUPERSONIC JET SPECTRUM OF THIOACETALDEHYDE Creators: Moule, D. C.; Bascal, H.; Clouthier, Dennis J.; Karolczak, Jerzy; Smeyers, Y. G.; Nino, A. Issue Date: 1991 Publisher: Ohio State University Abstract: The $S_{0} - T_{1}$ electronic transition in $CH_{3}CHS, CD_{3}CHS, CH_{3}CDS, CD_{3}CDS$ has been observed in a continuous supersonic pyrolysis jet as a laser phosphorescence excitation spectrum. The potential surface for the torsional - wagging internal coordinates were mapped out with ab initio molecular orbital calculations with a $6-31G^{*}$ basis in which the structural parameters were fully relaxed. The kinetic and potential energy data points were fitted to analytical double fourier expansions. These were incorporated into a two - dimensional Hamiltonian matrix in the torsion and wagging coordinates and symmetrized by the $G_{6}$ point group and solved for the energies and wavefunctions. The spectrum calculated from the the frequencies and Franck - Condon factors was fitted to the observed hot” and cold band spectra and refinements were made to the potential surface."" Description: Author Institution: Department of Chemistry, Brock University, St. Catharines; Department of Chemistry, The University of Kentucky; Instituto de Estructura de la Materia, Consejo Superior de Investigaciones; Escuela Universitaria de Informatica, Universidad de Castilla - La Mancha URI: http://hdl.handle.net/1811/12427 Other Identifiers: 1991-RB-7