SELENOFORMALDEHYDE: A ROTATIONAL ANALYSIS OF THE $A^{1}A_{2} - \bar{X}^{1}A_{1} 735 nm$ BAND SYSTEM OF H2C78 Se and $H_{2}C^{78}Se, H_{2}C^{80}Se$, and $D_{2}C^{80}Se$ FROM HIGH RESOLUTION LASER FLUORESCENCE EXCITATION SPECTRA

Clouthier, Dennis J.; Judge, R. H.; Moule, D. C.; Joo, D.- L.

SELENOFORMALDEHYDE: A ROTATIONAL ANALYSIS OF THE $A^{1}A_{2} - \bar{X}^{1}A_{1} 735 nm$ BAND SYSTEM OF H2C78 Se and $H_{2}C^{78}Se, H_{2}C^{80}Se$, and $D_{2}C^{80}Se$ FROM HIGH RESOLUTION LASER FLUORESCENCE EXCITATION SPECTRA

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Date

1990

Authors

Publisher

Ohio State University

Abstract

High resolution laser fluorescence excitation spectra of vibronic bands in the $A 1 A 2 − X ~ 1 A 1$ system of selenoformaldehyde have been observed with Doppler-limited resolution. The results of the rotational analysis of the origin band of $D 2 C 80 S e$ and the $4 n 1$ bands of $H 2 C 80 S e$ and $H 2 C 75 S e$ will be presented. The electronic transition is shown to be singlet-singlet in nature and the band polarizations are consistent with previous vibronic assignments. Erratic perturbations are observed in all three bands. The derived excited state $r ∘$ structure is similar to that of $H 2 C S$ , suggesting that selenoformaldehyde adopts a near-planar equilibrium structure in the excited state. Some preliminary results of the ongoing analysis of the tripletsinglet system will also be presented

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Author Institution: University of and Joo: kentucky; Department of Chemistry, University of Wisconsin-Parkside; Department of Chemistry, Brock University

URI

http://hdl.handle.net/1811/18081

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Abstracts of OSU International Symposium on Molecular Spectroscopy 1990-1999

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