[(E)-1-(Naph­thalen-2-yl)ethyl­idene](naph­thalen-1-ylmethyl)amine

The title compound, C₂₃H₁₉N, was obtained unexpectedly from the reaction of [Eu(nta)₃(PzPy)] {Hnta = 1-(2-naphtho­yl)-3,3,3-trifluoro­acetone and PzPy = 2-[3(5)-pyrazol­yl]pyridine} with 1-naphthyl­methyl­amine. 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 CH₃—C=N—CH₂ unit, which is also almost planar [r.m.s. deviation = 0.002 Å]. In the crystal, the mol­ecules are disposed in zigzag-type fashion, forming layers perpendicular to [100]. Weak supra­molecular C—H...π inter­actions contribute to the packing forces.