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SHANSHAN YU, ALIREZA SHAYESTEH AND PETER F. BERNATH, Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1; JACEK KOPUT, Department of Chemistry, Adam Mickiewicz University, Grunwaldzka 6, 60-780 Poznan, Poland.
High resolution infrared emission spectra of hot BeF2 in the 800--2500 cm-1 region have been rotationally analyzed. The
3 fundamental band,
1 +
2,
1 +
3 and 2
2 +
3 combination bands, and more than 15 hot bands were assigned. The
1 (
g),
2 (
u) and
3 (
u) frequencies were directly obtained by fitting several hot bands and combination bands together. A complete analysis of all the bands is in progress and will be presented. High level ab initio calculations have been performed for the MgF2 molecule to predict its vibration-rotation spectrum. An infrared emission spectrum of MgF2 was recorded and will be assigned with the aid of ab initio calculations.