title: Crystal structure of 1-amino-2-oxo-2,5,6,7,8,9-hexa-hydro-1H-cyclo-hepta-[b]pyridine-3-carbo-nitrile.
abstract: In the title compound, C11H13N3O, the seven-membered ring adopts a conformation such that the three atoms not involved in the aromatic plane lie on the same side of that plane. One hydrazinic H atom forms an intra-molecular hydrogen bond to the O atom; the other forms a classical inter-molecular hydrogen bond N-H⋯O, which combines with a 'weak' Har⋯O inter-action to build up double layers of mol-ecules parallel to thebcplane.
authors.affiliation: Chemistry Department, Faculty of Science, Helwan University, Cairo, Egypt.
authors.forename: Galal H
authors.initials: GH
authors.lastname: Elgemeie
authors.affiliation: Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Postfach 3329, D-38023 Braunschweig, Germany.
authors.forename: Peter G
authors.initials: PG
authors.lastname: Jones
keywords: N—H⋯O hydrogen bonding; N—NH2 group; carbo­nitrile; crystal structure; cyclo­hepta­[b]pyridine; tautomer