| Thispaperdesignedandsynthesizedanewligand,N,N’-bis（3-methylpyridin-yl）naphthalene-2,6-dicarboxamide（L）as the main ligand,different aromatic carboxylic acid[1,2-benzenedicarboxylic acid（1,2-H2BDC）,1,3-benzenedicarboxylic acid （1,3-H2BDC）,1,4-benzenedicarboxylic acid （1,4-H2BDC）,1,4-phenylenediacetate （1,4-H2PDC）,5-hydroxyisophthalic acid（5-H2HIP）,2,5-thiophene dicarboxylic acid（2,5-H2TDC）,3,4-thiophene dicarboxylic acid（3,4-H2TDC）]as an ancillary ligand,combined with different transition metals under hydrothermal conditions and 13 new complexes{[Ni（L）（1,4-BDC）（H2O）2]0.50（1）,[Ni（L）（1,4-PDC）（H2O）2]（2）,[Ni（L）（5-HIP）（H2O）2]2（3）,[Ni（L）（2,5-TDC）（H2O）]2·3H2O（4）,[Ni（L）（3,4-TDC）（H2O）2]·3H2O（5）,[Co（L）（1,2-BDC）（H2O）2]·3H2O（6）,[Co（L）（1,3-BDC）（H2O）2]（7）,[Co（L）（5-HIP）（H2O）2]2（8）,[Co（L）（2,5-TDC）（H2O）]2·3H2O（9）,[Co（L）（3,4-TDC）（H2O）2]·3H2O（10）,[Cd（L）（1,4-BDC）（H2O）]·H2O（11）,[Cd（L）（2,5-TDC）（H2O）]2·3H2O（12）,[Zn（L）（2,5-TDC）（H2O）]2·3H2O（13）]were obtained.The complexes were characterized by single crystal X-ray diffraction,X-ray powder diffraction（XRD）,thermogravimetric analysis （TG） and infrared spectroscopy （IR）,and the electrochemical and fluorescence sensing properties of some of them were studied.1.Using L as main ligand and different aromatic carboxylic acids as auxiliary ligands under hydrothermal conditions,10 new CoⅡ/NiⅡ complexes were synthesized.The effects of ancillary ligands on the structure of the complexes were discussed and the application of the complexes in electrochemical sensing properties was investigated.Single crystal X-ray diffraction shows that complexes 1-10 are different structures from one to three dimensional structures.Among them,complexes 1and 2 show two-dimensional grid structures,but the two-dimensional networks are different due to different ancillary ligands.Complexes 5,7 and 10 are one-dimensional structures in which complexes 5 and 10 are isomorphous,and it can also be seen that ortho-substituted ancillary ligands are good for forming one-dimensional structures.The complexes 3,4,6,8,and 9 are three-dimensional structures in which the complexes 3 and 8,4 and 9 are isomorphic.The similar structures of them are mainly due to their similar radius of NiⅡ/CoⅡ.The title complexes are characterized by infrared（IR）,thermogravi（TG）and powder X-ray diffraction（XRD）,and some complexes were explored in electrochemical analysis applications.2.Using L as main ligand and different aromatic carboxylic acids as auxiliary ligands under hydrothermal conditions,three new CdⅡ/ZnⅡ complexes were obtained.Since the central metals are d10 transition metals,fluorescence sensing properties are discussed in detail.Single crystal X-ray diffraction shows that the structures of complex 12 and13 are isomorphous.In complex 11,The L ligands link the metal ions to form a loop,which is extended by carboxylates to generate a two-dimensional structure.The L ligands of the complex 13 extend in two directions to form a three-dimensional structure.The characterizations of X-ray powder diffraction（XRD）,thermogravimetric analysis（TG）and infrared spectroscopy（IR）were carried out for all the complexes,and the fluorescence sensing of complexes11-13 were explored. |
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