Fourier Transform Infrared Emission Spectroscopy of theC4Δ–X4Φ System of ZrCl

✍ Scribed by R.S. Ram; P.F. Bernath

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 739 KB
• Volume: 186
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.1997.7446

✦ Synopsis

The high-resolution spectrum of ZrCl has been investigated in emission in the region 3000-10 000 cm 01 using a Fourier transform spectrometer. The bands were excited in a microwave discharge through a flowing mixture of ZrCl 4 and helium. New ZrCl bands observed in the interval 3600-4400 cm 01 have been assigned to a new C 4 D-X 4 F electronic transition. Four bands with R heads at 4305.7, 4208.0, 4064.7, and 3897.4 cm 01 have been assigned as the 0-0 bands of the 4 D 1/2 -4 F 3/2 , 4 D 3/2 -4 F 5/2 , 4 D 5/2 -4 F 7/2 , and 4 D 7/2 -4 F 9/2 subbands. A rotational analysis of the 0-0, 1-1, and 2-2 vibrational bands of the four subbands has been obtained and molecular constants have been extracted. Although there is no proof that the lower 4 F state is the ground state of ZrCl, we have labeled this transition as C 4 D-X 4 F, consistent with the corresponding near-infrared transition of TiCl (R. S. Ram and P. F. Bernath, J. Mol. Spectrosc., in press).