A dinuclear zinc complex [Zn-2(qnal)(2)(CH3COO)(2)] (Hqnal: N-(8'-quinolyl)-2-hydroxy-1-naphthaldimine) was synthesized and characterized by X-ray crystallography. The complex crystallizes in monoclinic system, space group C2/c with a = 40.00(3), b = 7.690(5), c = 27.492(16) angstrom, beta = 120.446(11)degrees, V = 17290(8) angstrom(3), Z = 8. D-c = 1.537 g/cm(3), M-r = 843.48, F(000) = 3456, mu(MoKa) = 1.374 mm(-1), S = 1.033, R = 0.0403 and wR = 0.1049 for 4454 observed reflections (I > 2 sigma(I)). It exhibits a 3D supramolecular architecture constructing by pi-pi stacking interactions between quinolyl and naphthyl rings and shows luminescent property in the yellow region.