A novel porous coordination polymer [La(C8H6NO2)3]n was synthesized by hydrothermal reaction of flexible ligands 3 (3 pyridyl)acrylate and La(NO3)3· 6H2O. The structure was characterized by elemental analysis, IR spectroscopy and X ray single crystal diffraction. X ray single crystal analysis reveals the structure consists of [La(C8H6NO2)3]n. It crystallizes in monoclinic crystal system with space group P2(1)/c. Crystallographic date: a=0. 7889(3)nm, b=2.5916(9)nm, c=1.1489(4)nm, α =90.00° , β =95.219(6)° , γ =90.00° , V=2.3393(15)nm3, Z=4, Dc=1.656g· cm- 3, μ =1.871mm- 1, F(000)=1152, R1=0.0328, wR2=0.0522. CCDC: 211700.
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.
