title: Molecular structure of 2,5-dihydropyrrole (C4NH7), obtained by gas-phase electron diffraction and theoretical calculations.
abstract: The structure of 2,5-dihydropyrrole (C4NH7) has been determined by gas-phase electron diffraction (GED), augmented by the results from ab initio calculations employing third-order Møller-Plesset (MP3) level of theory and the 6-311+G(d,p) basis set. Several theoretical calculations were performed. From theoretical calculations using MP3/6-311+G(d,p) evidence was obtained for the presence of an axial (63%) (N-H bond axial to the CNC plane) and an equatorial conformer (37%) (N-H bond equatorial to the CNC plane). The five-membered ring was found to be puckered with the CNC plane inclined at 21.8 (38) degrees to the plane of the four carbon atoms.
authors.affiliation: Faculty of Engineering, Oslo University College, Postboks 4 St. Olavs plass N-0130 Oslo, Norway.
authors.forename: Kirsten
authors.initials: K
authors.lastname: Aarset
authors.forename: Elizabeth M
authors.initials: EM
authors.lastname: Page
authors.forename: David A
authors.initials: DA
authors.lastname: Rice