Spectres microondes de plusieurs variétés isotopiques du conformère cis de la molécule de but-1-ène

Laboratoire de Spectroscopie et des Techniques Microondes, E.R.A. au CNRS n° 22, Université de Nancy I, Case Officielle 140, 54037 Nancy Cedex.

Résumé

The analysis of isotopic mixtures of but-1-ene is usually performed in microwave spectroscopy by observing rotational transitions of the skew conformers. Microwave studies of the cis conformers of 1, 1-d_2—, 1^{— 13}C- and d_8— but-1-ene allow to determine the geometry of this conformation with a very good accuracy. It follows that transition frequencies of a given isotopic species can be predicted within less than 3 MHz and be used for the isotopic chemical analysis of butene.

Abstract

The analysis of isotopic mixtures of but-1-ene is usually performed in microwave spectroscopy by observing rotational transitions of the skew conformers. Microwave studies of the cis conformers of 1, 1-d₂-, 1-¹³C- and d₈-but-1-ene allow to determine the geometry of this conformation with a very good accuracy. It follows that transition frequencies of a given isotopic species can be predicted within less than 3 MHz and be used for the isotopic chemical analysis of butene.