Acta Cryst. (2013). E69, o515 [ doi:10.1107/S1600536813006235 ]
Abstract: 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); 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-HN interactions lead to supramolecular layers parallel to (-101); these are connected by C-F interactions.
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