Existence d'une liaison hydrogène intramoléculaire dans les molécules d'aniline ortho halogénées

From the interpretation of microwave spectra of ortho, meta, para-chloro and fluoroaniline molecules, the amino group geometries have been obtained. It is pointed out the existence of an intramolecular hydrogen bound between nitrogen and halogen atoms in the ortho substituted species. That bound explains several anomalies in the physicochemical properties of these molecules Etude et interpretation des spectres rotationnels microondes d'o-, m- et p-chloro(et fluoro) anilines