Rotational Isomerism and Microwave Spectroscopy. II. The Microwave Spectrum of Butyronitrile

Abstract

The butyronitrile molecule has been confirmed by microwave spectroscopy to exist in two rotational isomers, trans and gauche. Rotational constants in the ground vibrational state are A=23 668.06, B=2268.16, C=2152.95 Mc/sec for the trans form and A=10 060.37, B=3267.63, C=2705.49 Mc/sec for the gauche form. Three sets of vibrational satellites have been found for each form.