The title compound, C10H5FN2, is a monoclinic (P21/c) polymorph of the previously reported triclinic (P-1) form [Antipin et al.(2003).J.Mol.
Struct.650, 1–20].The 13 non-H atoms in the title polymorph are almost coplanar (r.m.
s.deviation = 0.020 Å); gtech brush bar a small twist between the fluorobenzene and dinitrile groups [C—C—C—C torsion angle = 175.49 (16)°] is evident in the triclinic polymorph.
In the crystal, C—H.N interactions lead to supramolecular layers parallel to arrethe bush balm (-101); these are connected by C—F.π interactions.