OBSERVATION OF THE A$^{1}A^{\prime \prime }$ STATE OF ISOCYANOGEN
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Date
2007
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Ohio State University
Abstract
The \ {A}$^{1}A^{\prime \prime }$ state of isocyanogen is observed using photofragment fluorescence excitation spectroscopy (PHOFEX). The spectra are highly congested, but progressions likely due to the Franck-Condon active C-N-C excited state bend are evident. Linewidth measurements indicate that the excited state lifetime is $<$ 10 ps. These measurements are consistent with previous {\em ab initio} calculations, which predicted a bent excited state and a short lifetime due to predissociation. Although we do not believe the origin band is observed, we place an upper limit of 42523 cm$^{-1}$ on the excited state energy.
Description
Author Institution: Department of Chemistry, University of Evansville, Evansville, IN 47722; Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139