At room temperature, a new three-dimensional organic-inorganic coordination polymer [Cd(C4H2O4)(C3H4N2)3]n?2nH2O was synthesized by the reaction of Cd(CH3COO)2?2H2O, imidazole and fumaric acid. It was characterized ...At room temperature, a new three-dimensional organic-inorganic coordination polymer [Cd(C4H2O4)(C3H4N2)3]n?2nH2O was synthesized by the reaction of Cd(CH3COO)2?2H2O, imidazole and fumaric acid. It was characterized by EA, IR, TG-DTA and X-ray single-crystal diffraction. It crystallizes in the monoclinic system, space group P21/n with a = 8.980(3), b = 15.803(5), c = 13.415(4) ?, α = γ = 90.00°, β = 98.450(5)°, F(000) = 936, Mr = 466.73, Z = 4, V = 1883.0(10) ?3, Dc = 1.646 g/cm3, μ(MoKα) = 1.201 mm-1, S = 1.041, the final R = 0.0237 and wR = 0.0469. The crystal structure shows that the cadmium has a distorted octahedral environment with three carboxyl oxygen donors and three imidazole nitrogen donors. Each cadmium atom is linked by a fumatate as bridging ligand to afford a one-dimensional framework, and then an infinite three- dimensional supramolecular network is formed through hydrogen bonding interactions.展开更多
基金Supported by the National Natural Science Foundation of China (No. 20176008)and Natural Science Foundation of Hebei Province (No. 202006)
文摘At room temperature, a new three-dimensional organic-inorganic coordination polymer [Cd(C4H2O4)(C3H4N2)3]n?2nH2O was synthesized by the reaction of Cd(CH3COO)2?2H2O, imidazole and fumaric acid. It was characterized by EA, IR, TG-DTA and X-ray single-crystal diffraction. It crystallizes in the monoclinic system, space group P21/n with a = 8.980(3), b = 15.803(5), c = 13.415(4) ?, α = γ = 90.00°, β = 98.450(5)°, F(000) = 936, Mr = 466.73, Z = 4, V = 1883.0(10) ?3, Dc = 1.646 g/cm3, μ(MoKα) = 1.201 mm-1, S = 1.041, the final R = 0.0237 and wR = 0.0469. The crystal structure shows that the cadmium has a distorted octahedral environment with three carboxyl oxygen donors and three imidazole nitrogen donors. Each cadmium atom is linked by a fumatate as bridging ligand to afford a one-dimensional framework, and then an infinite three- dimensional supramolecular network is formed through hydrogen bonding interactions.
