Crystal structure of 4,6-dimethoxypyrimidin-2-amine-1-(4-nitrophenyl)- piperazine (1:1), C10H14N3O2·C6H8N3O2, C16H23N6O4

C16H22N6O4 ,t riclinic, P1 (no. 2), a =7 .4257(7) A, b =1 1.390(1) A, c =1 1.998(1) A, ’ =6 5.648(3)°, & =8 9.905(3)°, # =7 4.090(3)°, V =8 81.9 A 3 , Z =2 , Rgt(F) =0 .0478, wRref(F 2 ) =0 .1439, T =2 73 K.