FOURIER TRANSFORM EMISSION SPECTROSCOPY OF NEW ELECTRONIC TRANSITIONS OF TiCl and TiF
Publisher:
Ohio State UniversityAbstract:
The emission spectra of TiCl and TiF have been investigated at high resolution in the red and near infrared regions. TiF and TiCl were made in a microwave discharge lamp using a mixture of $TiCl_{4}$ or $TiF_{4}$ vapor and He, and the spectra were recorded using a Fourier transform spectrometer. Three new TiCl bands with origins near 6938.9, 6900.2 and $6861.7 cm^{-1}$ have been assigned as the 0-0, 1-1 and 2-2 bands of a new $^{2}\Sigma-^{2}\Sigma$ transition. This assignment is supported by our recent ab initio calculations on TiCl and ZrCl [Ram et al., J. Chem. Phys. 114, 3977-3987 (2001)]. The new TiF bands are located in the $12000-14000 cm^{-1}$ spectral region with the 0-0 band near $13232 cm^{-1}$. These bands consist of four sub-bands, $^{4}\Delta_{1/2} -^{4} \Phi_{3/2}, ^{4}\Delta_{3/2} -^{4} \Phi_{5/2}, ^{4}\Delta_{5/2} -^{4} \Phi_{7/2}$ and $^{4}\Delta_{7/2} -^{4} \Phi_{9/2}$, of a $^{4}\Delta - X^{4}\Phi$ transition. A rotational analysis of the 0-0 and 0-1 bands has been obtained and the spectroscopic constants have been extracted.
Description:
Author Institution: Department of Chemistry, University of Arizona; Department of Chemistry, University of Waterloo
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