Syntheses And Structures Of The Coordination Polymers Based On Tetrachlorophthalic Acid

In this work, we have designed and synthesized seven new coordination polymers of tetrachlorophthalic acid (H2L) under hydrothermal conditions. This thesis represents syntheses and structures of these polymers. In order to explore the influence of the properties of nitrogen-containing ligands on their final structures of coordination complexes, we select three kinds of neutral ligands [btp=1,3-bis(1,2,4-triazole-1-yl)propane, pbib=1,4-bis(imidazol-1-ylmethyl)benzene and mppp=4’-(p-tolyl)-2,2’:6’,2"-terpyridines] for discussion, and seven new coordination polymers have been discussed:namely [Cu2.5(L)2(OH)](1),[Zn1.5(L)(OH)](2),[Cd2.5(L)(OH)](3),[Cd2(L)(btp)(H2O)2](4),[Cd2(L)2(mppp)]·(H2O)(5),[Cd(L)(pbib)0.5(H2O)](6) and [Zn(L)(pbib)](7). Compounds1,2and3show two-dimensional (2D) structures. Compound5displays discrete structure, which are linked to form2D structures via π-π interactions. Compounds4and6exhibit2D rectangular grid, and compound7shows a two-dimensional zigzag network structure. Their structures have been determined by single-crystal X-ray diffraction analyses and further characterized by infrared spectra (IR), elemental analyses and powder X-ray diffraction (PXRD). In addition, thermogravimetric analyses (TGA) for compounds4-6and luminescence properties of compounds2-7were characterized.