The compound [Cd(L)2(NO3)]NO3·0.5H2O (L = N-benzyl-2-(quinolin-8-yloxy)aceta- mide) 1 has been synthesized and structurally determined by single-crystal X-ray diffraction, elemental analysis, IR and UV spectroscopy. The crystal belongs to the triclinic system, space group P1 with a = 11.7175(13), b = 11.8873(13), c = 14.0958(16) , α = 74.889(2), β = 78.228(2), γ = 78.831(2)o, V = 1835.0(4) 3, Z = 1, Dc = 1.502 Mg/m3, Mr = 1660.17,μ = 0.662 mm-1, F(000) = 846, λ(MoKα) = 0.71073 , the final R = 0.0585 and wR = 0.0577 for all observed reflections. The results show that the Cd(Ⅱ) ion with a square antiprismatic geometry is coordinated by a N2O6 donor set, two NO2 sets from two ligands and two O atoms from a bidendate nitrate group. In the crystal, the O-H···O and N-H···O hydrogen bonds are helpful to consolidate the three- dimensional network. The compound [Cd (L) 2 (NO3)] NO3 · 0.5H2O has been synthesized and structurally determined by single-crystal X-ray The crystal belongs to the triclinic system, space group P1 with a = 11.7175 (13), b = 11.8873 (13), c = 14.0958 (16) , α = 74.889 (2) , β = 78.228 (2), γ = 78.831 (2) o, V = 1835.0 (4) 3, Z = 1, Dc = 1.502 Mg / m3, Mr = 1660.17, μ = 0.662 mm-1, ) = 846, λ (MoKα) = 0.71073 , the final R = 0.0585 and wR = 0.0577 for all observed reflections. The results show that the Cd (Ⅱ) ion with a square antiprismatic geometry are coordinated by a N2O6 donor set, two NO2 sets from two ligands and two O atoms from a bidendate nitrate group. In the crystal, the OH ··· O and NH ··· O hydrogen bonds are helpful to consolidate the three-dimensional network.