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Infrared spectra of gaseous ethanenitrile in the 3500-250 cm−1 region: absolute band intensity and implications for the atmosphere of Titan

1995; Elsevier BV; Volume: 51; Issue: 4 Linguagem: Inglês

10.1016/0584-8539(94)00166-9

1873-3557

M. Nishio, P. Paillous, M. Khlifi, P. Bruston, F. Raulin,

Atmospheric Ozone and Climate

The IR spectrum of ethanenitrile (acetonitrile), a compound recently detected, in the atmosphere of Titan by millimetre observation, is studied in the 3500-250 cm−1 region. The most intense vibration bands are characterized and, for each band, the absolute intensity is determined with its uncertainty. Then, the data obtained are used to study the detectability by infrared spectroscopy of this compound in Titan's atmosphere. Especially, the upper limit of its stratospheric abundance is estimated with the help of the already available infrared spectra of Titan.