title: Crystal structure of 2-benzyl-amino-4-(4-meth-oxy-phen-yl)-6,7,8,9-tetra-hydro-5H-cyclo-hepta-[b]pyridine-3-carbo-nitrile.
abstract: The title compound, C25H25N3O, comprises a 2-amino-pyridine ring fused with a cyclo-heptane ring, which adopts a chair conformation. The central pyridine ring (r.m.s. deviation = 0.013 Å) carries three substituents, viz. a benzyl-amino group, a meth-oxy-phenyl ring and a carbo-nitrile group. The N atom of the carbo-nitrile group is significantly displaced [by 0.2247 (1) Å] from the plane of the pyridine ring, probably due to steric crowding involving the adjacent substituents. The phenyl and benzene rings are inclined to one another by 58.91 (7)° and to the pyridine ring by 76.68 (7) and 49.80 (6)°, respectively. In the crystal, inversion dimers linked by pairs of N-H⋯Nnitrile hydrogen bonds generate R 2 (2)(14) loops. The dimers are linked by C-H⋯π and slipped parallel π-π inter-actions [centroid-centroid distance = 3.6532 (3) Å] into a three-dimensional structure.
authors.affiliation: Department of Physics, The Madura College, Madurai 625 011, India.
authors.forename: R A
authors.initials: RA
authors.lastname: Nagalakshmi
authors.affiliation: Department of Physics, The Madura College, Madurai 625 011, India.
authors.forename: J
authors.initials: J
authors.lastname: Suresh
authors.affiliation: Department of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, India.
authors.forename: S
authors.initials: S
authors.lastname: Maharani
authors.affiliation: Department of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, India.
authors.forename: R Ranjith
authors.initials: RR
authors.lastname: Kumar
authors.affiliation: Department of Food Science and Technology, University of Ruhuna, Mapalana, Kamburupitiya 81100, Sri Lanka.
authors.forename: P L Nilantha
authors.initials: PL
authors.lastname: Lakshman
keywords: C—H⋯π inter­actions; carbo­nitrile; crystal structure; cyclo­hepta­pyridine; hydrogen bonding; slipped parallel π–π inter­actions