9-(4-Dimethylaminophenyl)-3,4,6,7,9,10-hexahydro-1,8(2H,5H)-acridinedione

The title compound, C 21 H 24 N 2 O 2 , contains an acridine moiety and a dimethylaminophenyl ring system. The side rings adopt half-chair conformations. The acridine chromophore is perpendicular to the substituted phenyl ring.