title: [(E)-1-(Naph-thalen-2-yl)ethyl-idene](naph-thalen-1-ylmethyl)amine.
abstract: The title compound, C(23)H(19)N, was obtained unexpectedly from the reaction of [Eu(nta)(3)(PzPy)] {Hnta = 1-(2-naphtho-yl)-3,3,3-trifluoro-acetone and PzPy = 2-[3(5)-pyrazol-yl]pyridine} with 1-naphthyl-methyl-amine. The 1- and 2-naphthyl groups are essentially planar [r.m.s. deviations of 0.007 and 0.011 Å, respectively] and subtend angles of 38.69 (11) and 16.50 (11)°, respectively, with the central CH(3)-C=N-CH(2) unit, which is also almost planar [r.m.s. deviation = 0.002 Å]. In the crystal, the mol-ecules are disposed in zigzag-type fashion, forming layers perpendicular to [100]. Weak supra-molecular C-H⋯π inter-actions contribute to the packing forces.
authors.affiliation: Department of Chemistry, University of Aveiro, CICECO, 3810-193, Aveiro,  Portugal.
authors.forename: Sofia M
authors.initials: SM
authors.lastname: Bruno
authors.forename: José A
authors.initials: JA
authors.lastname: Fernandes
authors.forename: Isabel S
authors.initials: IS
authors.lastname: Gonçalves
authors.forename: Filipe A
authors.initials: FA
authors.lastname: Almeida Paz