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A novel coordination polymer [Na2Cd(2,6-pyda)(N3)2(H2O)6]n (2,6-H2pyda = 2,6-pyridinedicarboxylic acid) has been synthesized and characterized by elemental analysis, IR and single-crystal X-ray diffraction. The crystal belongs to the monoclinic system, space group C2/c, with a = 24.416(4), b = 10.7638(17), c = 6.9224(11) , β = 106.124(2)°, V = 1747.7(5) 3, Mr = 515.64, Dc = 1.960 g/cm3, μ = 1.365 mm-1, F(000) = 1024, Z = 4, the final R = 0.0426 and wR = 0.1320. In the title complex, there exist two kinds of metal centers in the structure, cadmium ions and sodium ions. The Cd(II) atom shows a distorted pentagonal-dipyramidal geometry defined by two O and one N atoms from one deprotonated pyda ligand and four N atoms from four μ-1,1,3 azido groups. The adjacent cadmium atoms are bridged via two μ-1,1,3 azido groups, along the c axis to afford an extended chain. There is also a 2D network which is comprised of binuclear subunits [Na2(H2O)6] connected by O atoms from coordinated water between the adjacent Cdn(pyda)n(N3)2n infinite chains. Furthermore, each cadmium atom is connected with four adjacent sodium atoms through the bridging N3-ligand in μ-1,3 patterns. Thus, the title complex exhibits a novel three-dimensional network structure.
A novel coordination polymer [Na2Cd (2,6-pyda) (N3) 2 (H2O) 6] n (2,6-H2pyda = 2,6-pyridinedicarboxylic acid) has been synthesized and characterized by elemental analysis, IR and single- The crystal belongs to the monoclinic system, space group C2 / c, with a = 24.416 (4), b = 10.7638 (17), c = 6.9224 , V = 1747.7 (5) 3, Mr = 515.64, Dc = 1.960 g / cm3, μ = 1.365 mm- 1, F (000) = 1024, Z = 4, the final R = 0.0426 and wR = 0.1320. In the title complex, there exist two kinds of metal centers in the structure, cadmium ions and sodium ions. The Cd (II) atom shows a distorted pentagonal-dipyramidal geometry defined by two O and one N atoms from one deprotonated pyda ligand and four N atoms from four μ-1,1,3 azido groups. The adjacent cadmium atoms are bridged via two μ-1,1,3 azido groups, along the c axis to afford an extended chain. of binuclear subunits [Na2 (H2O) 6] connected by O atoms from coordinated Further, each cadmium atom is connected with four adjacent sodium atoms through the bridging N3-ligand in μ-1,3 patterns. Thus, the title complex exhibits a novel three-dimensional network structure.