The crystal structure of 2,3-difluoro-11 H -benzo-[4,5]imidazo[2,1- a ]isoindol-11-one, C 14 H 6 F 2 N 2 O

C 14 H 6 F 2 N 2 O, triclinic,P1 ¯$P\bar{1}$(no. 2), a  = 5.9169(4) Å, b  = 8.1225(7) Å, c  = 11.6546(8) Å, α  = 101.826( 6 )∘$101.826{(6)}^{\circ }$, β  = 104.661( 6 )∘$104.661{(6)}^{\circ }$, γ  = 93.190( 6 )∘$93.190{(6)}^{\circ }$, V  = 526.95(7) Å 3 , Z  = 2,R gt${R}_{\text{gt}}$( F ) = 0.0389,w Rref${\mathrm{w}R}_{\text{ref}}$( F 2 ) = 0.0950, T  = 170 K.