Infrared spectroscopy of 17O- and 18O-enriched carbon dioxide in the 1700-8300 cm−1 wavenumber region

The assignment of the high resolution Fourier transform spectra of carbon dioxide enriched in 17O and 18O which were recorded in LADIR (Paris, France) with the Bruker IFS 125-HR between 1800 and 9000 cm−1 and in USTC (Hefei, China) with the Bruker IFS 120-HR between 1700 and 9000 cm−1 was performed. In total 239 bands of 12 isotopologues: 16O12C16O, 16O12C18O, 16O13C16O, 16O13C18O, 18O12C18O, 18O13C18O, 16O12C17O, 17O12C17O, 17O12C18O, 16O13C17O, 17O13C17O and 17O13C18O were observed. Among them, 99 bands were observed for the first time. The majority of new observed bands belong to 17OCO isotopologues. The positions of 23,003 lines were determined with the experimental uncertainty on the level of 0.001 cm−1. The spectroscopic constants were fitted to the observed line positions for all observed bands.

► 98 new bands of 8 isotopologues 17OCO and 18OCO of carbon dioxide are observed. ► Positions of 23,003 lines of 12 carbon dioxide isotopologues are determined. ► Spectroscopic constants of 239 bands of carbon dioxide isotopologues are obtained.