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.