INFRARED FUNDAMENTAL AND FIRST HOT BANDS OF (OCO)-C-12-O-17 ISOTOPIC VARIANTS OF CARBON-DIOXIDE

Infrared spectra of (OCO)-O-16-C-12-O-17, (OCO)-O-17-C-12-O-17, and (O CO)-O-17-C-12-O-18 in a carbon dioxide sample enriched with oxygen-17 have been recorded with a resolution of about 0.0025 cm(-1) in the reg ions of the fundamental bands, v(2) (600-800 cm(-1)) and v(3) (2200-24 00 cm(-1)), and in the region of the ''forbidden'' band, v(1) (1200-14 00 cm(-1)), using the long path difference Fourier transform spectrome ter of the LPMA in Paris. For each species, the first hot band in the 4.5-mu m region and two hot bands at least in the 15-mu m region have been studied for the first time, and a simultaneous reduction of waven umbers measured in different spectral regions has been carried out yie lding new or improved spectroscopic constants. Line intensities have b een measured in the region of the v(2) and v(3) bands of (OCO)-O-16-C- 12-O-17, and the corresponding rotationless transition dipole moments and Herman-Wallis coefficients have been reported. (C) 1998 Academic P ress.