title: 1,3-Di-3-pyridyl-2,3-dihydro-1H-naphth[1,2-e][1,3]oxazine.
abstract: In the crystal structure of the title compound, C(22)H(17)N(3)O, the oxazine ring has a half-chair conformation. The dihedral angles between the best least-squares plane through the pyridine rings and the planar part (O-C-C-C-N) of the oxazine ring are 72.14 (6) and 35.44 (7)°, the smaller angle involving the pyridine ring adjacent to the oxazine O atom. The mol-ecule has two stereogenic centers at the oxazine carbons, RS and SR. The crystal packing reveals that symmetry-related mol-ecules are linked by inter-molecular N-H⋯N hydrogen bonds to form chains parallel to the b axis.
authors.forename: Betül
authors.initials: B
authors.lastname: Sen
authors.forename: Zuhal
authors.initials: Z
authors.lastname: Turgut
authors.forename: Emel
authors.initials: E
authors.lastname: Pelit
authors.forename: Muhittin
authors.initials: M
authors.lastname: Aygün