Infrared and Raman spectra of N-chloroethylamine Original Research Article

In this paper we report the assignments of infrared and Raman spectra of N-chloroethylamine observed in the gas and solid phases. The normal coordinate analyses were carried out by using ab initio force constants. Two rotational isomers around the CN axis were identified. The most stable conformer is the one where the chlorine atom is trans to the methyl group (T form) and the other is the one where the chlorine atom is gauche to the methyl group (G form) and the amino hydrogen is most probably trans to the methyl group. The relative abundance of the T form is 50% or more at room temperature.