5-(Prop-2-yn-1-yl)-5H-dibenzo[b,f]azepine: orthorhombic polymorph
In the title orthorhombic 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 aluminum lotion the crystal, molecules are linked by C—H.π contacts.The previously-reported polymorph [Yousuf et al.(2012).Acta Cryst.E68, o1101] crysta