title: Water/cyanobutadiyne complexes: an infrared matrix isolation and theoretical study.
abstract: The structures and energies of the 1:1 HC5N:H2O complexes in solid argon matrices have been investigated using FTIR spectroscopy and ab initio calculations, at the B3LYP/6-31G** and MP2/6-31G** levels of theory. Two types of 1:1 complexes are observed. The first one corresponds to the NH structure characterized by a hydrogen bond between H2O and the nitrogen of HC5N. The second corresponds to the OH form that involves a van der Waals interaction between the hydrogen of HC5N and the oxygen of water. HC5N can thus act either as an electrophile or as a nucleophile in complexes with water.
authors.affiliation: UMR CNRS 6633, Physique des Interactions Ioniques et Moléculaires, Equipe de Spectrométries et Dynamique Moléculaires, Université de Provence, Case 252, Centre de St-Jérôme, 13397, Marseille cedex 20, France.
authors.forename: Anne
authors.initials: A
authors.lastname: Coupeaud
authors.forename: Nathalie
authors.initials: N
authors.lastname: Piétri
authors.forename: Jean-Pierre
authors.initials: JP
authors.lastname: Aycard
authors.forename: Isabelle
authors.initials: I
authors.lastname: Couturier-Tamburelli