Condensed species in Titan's atmosphere: Identification of crystalline propionitrile (C2H5CN, CH3CH2CN) based on laboratory infrared data

We report the results of infrared studies of crystalline C2H5CN at several temperatures between 15 and 160 K. A case is made for the identification of crystalline C2H5CN in the stratosphere from the Voyager IRIS spectrum of Titan.