title: Infrared study on hydrogen chloride complexed with allene.
abstract: The first rotationally resolved observation of the infrared (IR) spectrum of the molecular complex C(3)H(4)-HCl in gas phase is reported. New IR spectra have been recorded at high resolution by means of a slit jet. Rotational constants and vibrational frequencies have been obtained from these spectra. These data are presented and compared with high level ab initio calculations (CCSD(T)/cc-pVTZ). The results obtained in this study are compared with those on acetylene and ethene-HCl complexes. We observe a broadening of the lines interpreted as a decrease of the lifetime of the excited vibrational state with the size of the partner of complexation and also a correlation between the vibrational shift of the H-Cl stretching mode and the proton affinity of the acceptor molecule.
authors.affiliation: CNRS, Laboratoire de Photophysique Moléculaire UPR3361, Univ. Paris-Sud, F-91405 Orsay, France. michele.chevalier@u-psud.fr
authors.forename: Michele
authors.initials: M
authors.lastname: Chevalier
authors.forename: Michel
authors.initials: M
authors.lastname: Broquier
authors.forename: Valerie
authors.initials: V
authors.lastname: Brenner
mesh_terms: D000466:Alkadienes / Q000737:chemistry*; D006851:Hydrochloric Acid / Q000737:chemistry*; D008958:Models, Molecular; D008968:Molecular Conformation; D013055:Spectrophotometry, Infrared; D013696:Temperature; D013816:Thermodynamics; D014732:Vibration
chemical_list: D000466:Alkadienes; C025947:propadiene; D006851:Hydrochloric Acid