title: 2-(1,2,3,4-Tetra-hydro-phenanthren-1-yl-idene)malononitrile.
abstract: In the title complex, C(17)H(12)N(2), the non-aromatic six-membered ring adopts an envelope conformation. The dihedral angle between the eight-membered plane containing the malononitrile group and the aromatic system is 25.88 (4)°. The distance from the central C atom of the malononitrile group to the centroid of the n-glide-related distal aromatic ring is 3.66 Å, suggesting π-π inter-actions.
authors.affiliation: Department of Chemistry, Bucknell University, Lewisburg, PA 17837, USA.
authors.forename: George B
authors.initials: GB
authors.lastname: Ettenger
authors.forename: Brian Wesley
authors.initials: BW
authors.lastname: Williams
authors.forename: Daniel
authors.initials: D
authors.lastname: Brillhart
authors.forename: Margaret E
authors.initials: ME
authors.lastname: Kastner