dc.creator Yu, Lian en_US dc.creator Williamson, James M. en_US dc.creator Foster, Stephen C. en_US dc.creator Miller, Terry A. en_US dc.date.accessioned 2006-06-15T18:16:50Z dc.date.available 2006-06-15T18:16:50Z dc.date.issued 1989 en_US dc.identifier 1989-FA-5 en_US dc.identifier.uri http://hdl.handle.net/1811/17758 dc.description Author Institution: Laser Spectroscopy Facility, Department of Chemistry, The Ohio State University; Department of Chemistry, Florids State University en_US dc.description.abstract Due to the Jahn-Teller effect, the fundamental band of a Jahn-Teller active vibration becomes allowed in an electronic $A \leftarrow E$ transition. The corresponding rotational selection rules differ from those of the origin band and the intensity gives a good indication of the magnitude for the Jahn-Teller interaction. We have recorded high resolution, rotationally resolved, LIF spectra of a number of different vibronic bands of jet-cooled $C_{5}H_{5} (\bar{A} ^{3}A_{2} \leftarrow \bar{X} {^{3}}E_{1}). C_{6}F_{6}H_{5}^{+}(\bar{B}{^{2}}A_{2}+ \bar{X}{^{2}}E)$and $C_{6}F_{6}{^{+}}(\bar{B}{^{2}}A_{2} \leftarrow \bar{X}{^{2}}E_{1})$. Several of these vibronic bands with rotational structures different from those of the corresponding origin bands are assigned to the fundamental transitions of Jahn-Teller active vibrations. Detailed rotational analyses yield, in addition to the normal molecular constants, the values of the angular moments, $\zeta_{\nu}$, for various Jahn-Teller active vibrations. For $C_{6}F_{3}H_{3}^{+}$ and $C_{6}F_{6}^{+}$, the previous assignment of the Jahn-Teller active vibrations is confirmed. For $C_{4}F_{4}$, the first definitive identification of the Jahn-Teller active vibrations is made. en_US dc.format.extent 68091 bytes dc.format.mimetype image/jpeg dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title ROTATIONALLY RESOLVED SPECTRA OF JAHN-TELLER ACTIVE VIBRATIONS IN AN ELECTRONICALLY ALLOWED $A \leftarrow E$ TRANSITION en_US dc.type article en_US
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