Crystal structure of 2-amino-4-(4-methoxyphenyl)-4H-benzo[g]chromene-3-carbonitrile

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-methoxyphenyl 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, molecules 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.

Keywords

• crystal structure
• chromenes
• benzopyrans
• 2-amino-3-cyano-4H-chromene derivatives
• 4H-chromene and fused 4H-chromene derivatives
• hydrogen bonding