title: 4-(4-Meth-oxy-phen-yl)-6-methyl-amino-5-nitro-2-phenyl-4H-pyran-3-carbonitrile.
abstract: In the title compound, C20H17N3O4, the central pyran ring adopts a boat conformation with the O atom and diagonally opposite C atoms displaced by 0.1171 (1) and 0.1791 (1) Å, respectively, from the mean plane defined by the other four atoms. The coplanar atoms of the pyran ring and the meth-oxy-benzene ring are nearly perpendicular, as evidenced by the dihedral angle 87.01 (1)°. The amine H atom forms an intra-molecular N-H⋯O(nitro) hydrogen bond. In the crystal, mol-ecules are linked into dimeric aggregates by N-H⋯O(nitro) hydrogen bonds, generating an R2(2)(12) graph-set motif.
authors.affiliation: Department of Physics, The Madura College, Madurai 625 011, India.
authors.forename: R
authors.initials: R
authors.lastname: Vishnupriya
authors.forename: J
authors.initials: J
authors.lastname: Suresh
authors.forename: S
authors.initials: S
authors.lastname: Sivakumar
authors.forename: R Ranjith
authors.initials: RR
authors.lastname: Kumar
authors.forename: P L Nilantha
authors.initials: PL
authors.lastname: Lakshman