title: Crystal structure of 2-amino-4-(4-meth-oxy-phen-yl)-4H-benzo[g]chromene-3-carbo-nitrile.
abstract: In the title compound, C21H16N2O2, the naphthalene fragment is twisted slightly, as indicated by the dihedral angle of 3.2 (2)° between the two six-membered rings. The pendant 4-meth-oxy-phenyl ring makes a dihedral angle of 86.08 (6)° with the central six-membered ring of the 4H-benzo[g]chromene ring system. In the crystal, mol-ecules are linked by pairs of N-H⋯N hydrogen bonds, forming inversion dimers which are linked into chains propagating in the b-axis direction by N-H⋯O hydrogen bonds.
authors: Department of Chemistry, Tulane University, New Orleans, LA 70118, USA.
authors: Joel T
authors: JT
authors: Mague
authors: Chemistry and Environmental Division, Manchester Metropolitan University, Manchester M1 5GD, England; Chemistry Department, Faculty of Science, Minia University, 61519 El-Minia, Egypt.
authors: Shaaban K
authors: SK
authors: Mohamed
authors: Department of Physics, Faculty of Sciences, Erciyes University, 38039 Kayseri, Turkey.
authors: Mehmet
authors: M
authors: Akkurt
authors: Chemistry Department, Faculty of Science, Sohag University, 82524 Sohag, Egypt.
authors: Sabry H H
authors: SH
authors: Younes
authors: Kirkuk University, College of Science, Department of Chemistry, Kirkuk, Iraq.
authors: Mustafa R
authors: MR
authors: Albayati
keywords: 2-amino-3-cyano-4H-chromene derivatives; 4H-chromene and fused 4H-chromene derivatives; benzo­pyrans; chromenes; crystal structure; hydrogen bonding