Crystal structure of (E)-1(anthracen-9-ylmethylidene)[2-(morpholin-4-yl)ethyl]amine

Abstract

The title compound, C21H22N2O, crystallizes with two independent molecules in the asymmetric unit. In both molecules, the anthracene ring systems are almost planar, with maximum deviations of 0.071 (8) and 0.028 (7) Å, and make dihedral angles of 73.4 (2) and 73.3 (2)° with the least-squares planes formed by the four C atoms of the morpholine rings, which adopt a chair conformation. An intramolecular C—H...π interaction occurs. In the crystal, the packing is stabilized by weak C—H...O hydrogen bonds, which connect pairs of molecules into parallel to the c axis, and C—H...π interactions.

Keywords

• crystal structure
• C—H...π interactions
• Schiff bases
• anthracene
• morpholine
• methanimine