A novel complex [Cd(C10H12N2O)(2)I-2(H2O)(2)], was synthesized and characterized by IR spectra. elemental analysis and single-crystal X-ray. The crystal structure analysis shows that the Cd(II) is a six-coordinated in a slightly distorted octahedral geometry environment, then complex packs in 3D-superamolecular network through intermolecular hydrogen bonds. The crystal is monoclinic, space group C2/c with unit cell parameters: a = 21.861(2)angstrom, b = 8.642(8)angstrom, c = 14.732(2)angstrom, alpha = 90 degrees, beta = 114.4(1)degrees, gamma = 90 degrees, V = 2534.1(4)angstrom(3), Z = 4, Mr = 754.7, Dc = 1.978 Mg/cm(3), mu = 3.330 mm(-1). F(000) = 1448, T = 291(2) K, R = 0.0472, wR = 0.1235 for 2484 reflections with I > 2 sigma(I).