| Terephthalic acid as rigid ligand, Howver, has flexible coordination geometries in various coordination polymers. As functional materials many of them have potential applications in magnetism, adsorption, optics, catalysis and other fields. Thus the coordination polymers containing terephthalic acid bridge ligands attract much attention and become important parts of crystal engineering and supramolecular chemistry fields. In this dissertation, we using terephthalic acid, L–alanine and the appropriate metal salts under solvothermal conditions, four novel coordination polymers have been successfully synthesised. The compounds have been structurally characterized by X-ray single crystal diffraction, X-ray power diffraction (XRPD), infrared (IR) spectroscopy, elemental analysis, and thermogravimetric analysis (TGA). Zn3(BDC)3(DMA)2(1): monoclinic, space group C2/c,α= 23.3111 (A|°), b = 10.6495 (A|°), c = 15.9984 (A|°),α= 90.000°,β= 111.796°,γ= 90.000°, exhibiting a two-dimensional structure; Cd2 (BDC)2·2H2O(2): monoclinic, space group C2/c,α= 35.096(6) (A|°), b = 11.1934(16) (A|°), c = 18.254(3) (A|°),α= 90.000°,β= 93.462(2)°,γ= 90.000°, exhibiting a three-dimensional structure; Y3(BDC)3.5(OCH3)(H2O)2·H2O(3): triclinic, space group P-1,α= 11.423(2) (A|°), b = 12.107(2) (A|°), c = 13.104(2) (A|°),α= 86.547(2)°,β= 66.859(2)°,γ= 71.584(2)°, exhibiting a three-dimensional structure; Tb3(BDC)4.5(OCH3)2(H2O) (A|°)H2O(4): triclinic, space group P-1,α= 11.0882 (A|°), b = 12.3090 (A|°), c = 17.6457 (A|°),α= 74.319°,β= 88.553°,γ= 77.119°, exhibiting a three-dimensional structure. In this paper we also use Terephthalic acid and HL mixed ligands synthesis Zn2(BDC)2(HL)2(5): triclinic, space group P1,α= 7.8592(17) (A|°), b = 10.843(2) (A|°), c = 11.940(2) (A|°),α= 69.602(3)°,β= 75.744(3)°,γ= 71.163(3)°, exhibiting a two-dimensional drape structure. |
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