Structure And Fluorescence Properties Of Cu(?),Zn(?),Ni(?) Coordination Compounds

The diversity and potential value of coordination compounds(CCs)and their topological structures have led to extensive research by crystallographers and enviro nmentalists.During the construction process,the experimental results are due to a number of factors acting together,such as the metal ions in the center,the type of solvent,the PH of the solution,the ligand coordination mode,weak interaction hydrogen bond and ?-? accumulation.This paper selected N and O organic compounds as ligands and selected Ni2+,Cu2+and Zn2+ions with electron configurations of d8,d9 and d10,respectively.Finally,twenty-five new coordination compounds were synthesized,and their crystal structures were analyzed and their fluorescence properties were analyzed.The content of the Paper is as follows:?4,4'-Oxobisbenzoic Acid(H2OBBA)was used as a ligand to react with copper chloride,and three different new coordination compounds were synthesized in different solvents.The crystal structure analysis shows that OBBA ligand mAkes compound 1 and 2 form 1D chain structure,while hydrogen bond mAkes them form 2D layered structure.OBBA and OH-cause compound 3 to form a 2D surface and a 3D networks Pace structure through hydrogen bonds.Therefore,the weak interaction hydrogen bond and H2OBBA coordination model contribute to the structural diversity of new coordination compounds.?Zinc nitrate hexahydrate and 4,4'-bipyridine(LGC)and terephthalic acid(H2TPA),3-nitrophthalic acid(NPA),glutaric acid(PTD),2-thiophenoic acid(TPBA),3,4dimethylbenzoic acid(DMBA)were used as ligands to form five new zinc coordination compounds(4-8).X-ray single crystal diffraction analysis shows that 4,4'-bipyridine plays a very good frame structure,so that the whole coordination compound can be used as pore structure in various fields.The final results of the carboxylic acid ligands show a variety of structures due to the diversity of coordination modes and the complexity of their structures.?Synthesis and structure of nitrogen-containing organic ligands and transition metals copper and nickel.Seven coordination polymers(9-15)were synthesized by altering nitrogen-containing organic ligands and metal center ions.The nitrogencontaining organic ligands were 2,5-pyridine dicarboxylic acid(DPPA),2,6pyridine dicarboxylic acid(PDA),4-(1H imidazole)benzoic acid(BZA),1-glutamic acid(GTA)and i minodiacetic acid(IDA).Through the structure analysis,the nitrogen-containing organic carboxylic acid ligand has a strong binding ability in the coordination process.At the same time,weak interaction hydrogen bond appears in the structure,which mAkes great contribution to the stability and diversity of the structure.?organic carboxylic acid as ligand with ten new type of copper(?)to form the coordination polymer(16-25),early on the study of carboxylic acid ligands is also very much,mAinly because of its uncertainty and coordinatioNPAttern diversity,so that we can get a variety of structures,found in the structure,even the same homogeneous carboxylic acid ligands in all conditions and at the same time also can have different ways of coordination.This is sufficient to illustrate the diversity of coordinatioNPAtterns of carboxylic acid ligands.The carboxylic acid ligands selected were:phthalic acid(PTA),resorcinic acid(AIP),terephthalic acid(TPA),1,5-thioresorcinic acid mono-sodium(SAMA),homobenzic acid(BTC),1,4cyclohexane dicarboxylic acid(CHDA),ethanedioic acid(OAHD),succinic acid(SOA),adipic acid(ADPA),and octylic acid(SBA).In addition,we studied the solid fluorescence properties of these 25 coordination compounds at room temperature,and discussed the fluorescence properties.