Pyrolysis of ethylamine. II. Synthesis and microwave spectrum of ethylidenimine (CH3CH=NH)

Abstract

Microwave rotational spectra assignable to gas phase cis- and trans-ethylidenimine (CH3CH=NH) have been detected in the pyrolysis decomposition products from several alkylamines and from the ring trimer, (CH3CHNH)3. Stark effects, hyperfine and internal rotation splittings have aided the assignment of the observed spectra and allowed the determination of rotational distortion constants, 14N nuclear electric quadrupole coupling constants, internal rotation barriers, and electric dipole moments. Limited structural information was also obtained.