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A novel coordination polymer of [Ca(2-OPA)2(H2O)2]n (2-OPA-=2-oxo-1(4H)-pyridineacetate anion) was synthesized and characterized by elemental analysis, IR, TG and single crystal X-ray diffraction. The title complex crystallizes in orthorhombic with space group Pna21, a=0.799 96(16) nm, b=0.823 77(16) nm, c=2.415 3(5) nm, V=1.591 6(6) nm3, Z=4, R=0.030 3, wR=0.070 0. The Ca atom is eight-coordinated by six O atoms of four 2-OPA- ligands and two water molecules, and displays a dodecahedron coordination geometry. Each 2-OPA- ligand bridges two adjacent Ca atoms, forming a infinite chain along the a direction. The Ca...Ca distance is 0.4102 2(8)nm. A two-dimensional supramolecular framework is further constructed by the hydrogen bonds and the weak π-π interactions. The results of TG analysis show the chain structure of the title complex was stable under 297.5 ℃. CCDC: 251669.
A novel coordination polymer of [Ca (2-OPA) 2 (H2O) 2] n (2-OPA- = 2-oxo-1 (4H) -pyridineacetate anion was synthesized and characterized by elemental analysis, IR, TG and single crystal X-ray diffraction. The title complex crystallizes in orthorhombic with space group Pna21 with a = 0.799 96 (16) nm, b = 0.823 77 (16) nm, c = 2.415 3 ) nm3, Z = 4, R = 0.0303, wR = 0.070 0. The Ca atoms are eight-coordinated by six O atoms of four 2-OPA-ligands and two water molecules, and display a dodecahedron coordination geometry. Each 2- The Ca ... Ca distance is 0.4102 2 (8) nm. A two-dimensional supramolecular framework is further constructed by the hydrogen bonds and the weak π -π interactions. The results of TG analysis show the chain structure of the title complex was stable at 297.5 ° C. CCDC: 251669.