Abstract
In the title compound, C24H20FN3O2, despite the 4H-pyran ring having a flattened half-chair conformation [the methine C atom lies 0.257 (3) angstrom above the plane of the remaining atoms with an r.m.s. deviation of 0.0295 angstrom], the 14 non-H atoms of the 4H-benzo[h] chromene residue are approximately coplanar (r.m.s. deviation = 0.081 angstrom). The benzene ring is nearly perpendicular to this plane [dihedral angle = 76.18 (10)degrees], but the planar (r.m.s. deviation = 0.033 angstrom) dimethylmethanimidamide substituent is coplanar [dihedral angle = 1.96 (12)degrees]. In the crystal, centrosymmetric dimeric aggregates arise from C-H center dot center dot center dot N interactions, and these are connected into supramolecular layers in the ab plane by C-H center dot center dot center dot pi and pi-pi [intercentroid (central C-6 ring)center dot center dot center dot(outer C-6 ring)(i) distance = 3.8564 (14) angstrom] interactions.