Photoelectron spectra of methylchloramine and methyldichloramine

Abstract

The He(I) photoelectron spectra of methylchloramine, CH₃NHCI, and methyldichloramine, CH₃NCl₂, have been obtained from observation of the products of the gas phase reaction of CH₃NH₂ and Cl₂. Spectrum stripping was used to remove CH₃NH₂ and Cl₂ bands as well as to separate the CH₃NHCl and CH₃NCl₂. The spectra correlate well with calculated ab initio eigenvalues and molecular orbital properties, and show that the N—Cl bonds involve greater pπ–pπ interaction than the analogous N—Br bonds in the corresponding bromamines.