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Acta Crystallogr Sect E Struct Rep Online. 2013 Mar 9;69(Pt 4):o515. doi: 10.1107/S1600536813006235. Print 2013 Apr 1.

2-(4-Fluoro-benzyl-idene)propane-dinitrile: monoclinic polymorph.

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  • 1Chemistry Department, Faculty of Science, King Khalid University, Abha 61413, PO Box 9004, Saudi Arabia ; Chemistry Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo 11884, Egypt.


The title compound, C10H5FN2, is a monoclinic (P21/c) polymorph of the previously reported triclinic (P-1) form [Anti-pin 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 fluoro-benzene and dinitrile groups [C-C-C-C torsion angle = 175.49 (16)°] is evident in the triclinic polymorph. In the crystal, C-H⋯N inter-actions lead to supra-molecular layers parallel to (-101); these are connected by C-F⋯π inter-actions.

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