NEAR INFRARED SPECTROSCOPY OF DEUTERO-BROMOMETHYLENE
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Date
1998
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Publisher
Ohio State University
Abstract
The $\tilde{A}^{1} A^{\prime \prime} (0,1,0) \leftarrow (0,0,0)$ electronic band system of DCBr has been measured in the region $11 720 cm^{-1}$ to $11 780 cm^{-1}$. Spectra were recorded using a transient absorption frequency modulation Ti:Sapphire $spectrometer^{a}$ incorporating a multipass Herriott-type cell for increased $sensitivity.^{b}$ The $(K = 0 \leftarrow K = 1)$ and $(K = 1 \leftarrow K = 0)$ sub-bands of both isotopomers, $DC^{81}Br$ and $DC^{79}Br$, have been assigned and spectroscopic parameters determined. Transitions involving levels from higher K states are visible but their assignments are complicated by a variety of perturbations (vibronic, spin-orbit, coriolis, fermi resonance) involving the two singlet states and a background triplet state. Acknowledgements: The work was carried out at Brookhaven National Laboratory under Contract No. DE-AC02- 76CH00016 with the U.S. Department of Energy and supported by its Division of Chemical Sciences, Office of Basic Energy Sciences.
Description
$^{a}$ J.C. Bloch, R.W. Field, G.E. Hall, and T.J. Sears, J. Chem. Phys. 101, 1717 (1994) $^{b}$ C. Fockenberg, A.J. Marr, T.J. Sears, and B-C. Chang, J. Mol. Spectrosc. in press (1998)
Author Institution: Department of Chemistry, Brookhaven National Laboratory
Author Institution: Department of Chemistry, Brookhaven National Laboratory