1-(8,8-Dicyanoheptafulven-3-yl)aza-15-crown-5 ether

The title compound, C 20 H 25 N 3 O 4 , forms a head-to-tail association of two nearly parallel molecules. The bond lengths in the conjugated system indicate a highly polar electronic structure induced by the mesomeric effects of the dialkylamino and dicyano groups.