Synthesis,Structure And Properties Of Complexes Of Azole Heterocyclic And Carboxylic Acid Complexes

In recent years,coordination polymers（CPs）have attracted much attention due to its diversity topological framework and potential application in catalysis,gas storage,conductive materials and drug carriers.The factors affecting the final products are complicated up to now.There are still many challenges effecting the structure and properties of CPs though many CPs have been reported.Ten CPs were synthesized through various azole heterocyclic rings,carboxylic acid ligands and metal salts.The structures were characterized,and their fluorescence and photocatalytic properties were investigated.Five CPs were obtained by mixing five azole heterocyclic ligands and five carboxylic ligands with Cd（Ⅱ）metal salts under hydrothermal reaction.CP 1 possesses a 3D self-connected cgh6 structure.CP 2 features a 2D sql layered structure.CP 3 exhibits a 3D pcu network.CP 4 has a 3D 4,4,5T41 topological structure.CP 5 shows a 1D chain.CPs 2 and 5 expanded into a supramolecular structure through hydrogen interaction.Two kinds of N-donor ligands,two carboxylic acid ligands and Ag（Ⅰ）metal salts were mixed,and two CPs were obtained under hydrothermal reaction.CP 6 represents a（3,4,6）-linked 2D framework.CP 7 exhibits a 1D chain.CPs 6 and 7 can be further constructed a 3D supramolecular network through π-π interaction.Three CPs were synthesized using Zn（Ⅱ）ions with three N-donor ligands and three carboxylic acid ligands under hydrothermal reaction.CP 8 presents a 3D sra network.CP 9 features a 2D hcb structure that expanded into a 3D supramolecular structure via hydrogen interaction.CP 10 features a 3D novel（3,4,4）-connected structure.CPs 1～10 could maintain the stability of the main structure upto 210 ℃.CP 8 can be used as fluorescent probe to detect the presence of Hg²⁺ in water.In addition,the photodegradation efficiency of MB reached nearly 94.4% for CP 1 and 91.2% for CP 2.Figure 60;Table 11;Reference 62...