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In the title ortho-rhom-bic polymorph (space group Iba2), C17H13N, the dihedral angle between the benzene rings is 55.99 (10)° and the azepine ring adopts a boat conformation. In the crystal, mol-ecules are linked by C-H⋯π contacts. The previously-reported polymorph [Yousuf et al. (2012 ▶). Acta Cryst. E68, o1101] crystallizes in the monoclinic system (space group P21/c) with two mol-ecules in the asymmetric unit.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3588308 | PMC |
| http://dx.doi.org/10.1107/S1600536812048908 | DOI Listing |
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