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A three-dimensional coordination polymer {[Cd_2(HCAM)_2(H_2O)_4]·3.5H_2O}_n was synthesized by the hydrothermal reaction of H_3CAM(H_3CAM=4-hydroxypyridine-2,6-dicerboxylic acid)and Cd(NO_3)_2·4H_2O.The structure was characterized by elemental analysis,thermal gravimetric analysis,infrared spectroscopy and single-crystal X-ray diffraction.It crystallizes in triclinic,space group P_1~-with a= 9.4389(19),b=11.009(2),c=11.192(2)(?),α=87.87(3),β= 74.63(3),γ=81.22(3)°,V=1108.2(4)(?)~3,Z=2,D_c=2.164g/cm~3,μ=2.011 mm~(-1),F(000)=710,R =0.0419 and wR=0.1170.X-ray analysis reveals that the title compound adopts a one-dimensional staircase structure by carboxyl of H_3CAM and water molecules,and it is further linked by hydrogen bonds to form a 3-D metal-organic open framework.The thermal gravimetric analysis displays that the framework exists stably below 300℃.
A three-dimensional coordination polymer {[Cd_2 (HCAM) _2 (H_2O) _4] · 3.5H_2O} _n was synthesized by the hydrothermal reaction of H_3CAM (H_3CAM = 4-hydroxypyridine-2,6- dicerboxylic acid) and Cd (NO_3) _2 · 4H_2O.The structure was characterized by elemental analysis, thermal gravimetric analysis, infrared spectroscopy and single-crystal X-ray diffraction. It crystallizes in triclinic, space group P_1 ~ -with a = 9.4389 (19), b = 11.009 (2) (?), α = 87.87 (3), β = 74.63 (3), γ = 81.22 (3) ° and V = 1108.2 (4) D_c = 2.164 g / cm ~ 3, μ = 2.011 mm -1, F (000) = 710, R = 0.0419 and wR = 0.1170.X-ray analysis reveals that title compound adopts one-dimensional staircase structure by carboxyl of H_3CAM and water molecules, and it is further linked by hydrogen bonds to form a 3-D metal-organic open framework. The thermal gravimetric analysis displays that the framework exists stably below 300 ° C.