Frequencies and strengths of vibrational-rotational lines of ethylene 12C2H4 in the 10-μm region

In the present study, three infrared active bands ((nu) 10 , (nu) 7 , (nu) 12 ) are analyzed within the framework of a four-level model, taking into account mutual Coriolis interaction between three infrared active bands and Coriolis interaction with the inactive band (nu) 4 .