Rovibrational spectra of DCF3 in the 2000cm−1 region: A high-resolution study of the v5=2 and v2=v5=1 levels

The high-resolution infrared spectrum of DCF 3 was investigated in the 2000 cm −1 region, with the aim of assigning and analyzing the overtone bands 2ν 5 ( A 1 + E ), as well as the combination band ν 2 + ν 5 ( E ). The present paper reports on the first high-resolution study of the v 2 = v 5 = 1 and v 5 = 2 levels, through the analysis of the combination ν 2 + ν 5 and the overtone 2 ν 5 ∓ 2 bands respectively. This analysis can be thought of as a necessary step toward the reinvestigation of the complicated vibrational pattern in the CD stretching fundamental region.