ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS, cilt.70, 2014 (ESCI)
In the title molecule, C22H12N6, the fused tetracyclic core shows a small lengthwise twist as indicated by the dihedral of 2.7 (2)degrees between the outer rings. In the crystal, molecules stack along the b-axis direction via offset pi-stacking [centroid-centroid distances = 3.5282 (13) and 3.5597 (14) angstrom] with the stacks weakly associated through C-H center dot center dot center dot N hydrogen bonds. The phenyl ring is rotationally disordered over two orientations with an occupancy ratio of 0.516 (4):0.484 (4).