Crystal structure of N-[3-(benzo[d]thiazol-2-yl)-6-bromo-2H-chromen-2-yl idene]-4-methyl-benzenamine

The title compound, C23H15BrN2OS, was the unexpected product in an attempted synthesis of the isomeric 3-(benzo[d]thiazol-2-yl)-6-bromo-1-p-tolylquinolin-2(1H)-one. The C-chromene = N-C angle is wide [125.28 (8)degrees]. The benzothiazole and chromene ring systems are almost coplanar, with their planes parallel to (1 (1) over bar0); the toluene ring system is rotated by ca 40 degrees out of the chromene plane. The molecular packing involves layers with pi-stacking, borderline 'weak' hydrogen bonds and possible C-H center dot center dot center dot pi contacts.