C14H8Cl2O, monoclinic, P21/c (no. 14), a = 7.4510(4) Å,b = 15.0430(7) Å, c = 10.5973(4) Å, b = 104.829(3)°,V = 1148.2 Å3, Z = 4, Rgt(F) = 0.0470, wRref(F2) = 0.1494,T = 296 K.