含有未配位羧基的吡唑羧酸基镉和铜的配合物的合成、晶体结构和荧光性能

发布时间：2018-11-08 15:11

【摘要】：以菲咯啉和3,5-二甲基-1-羧甲基-4-吡唑甲酸为配体,合成了2个新的配合物[Cd(Hcmdpca)2(phen)(H_2O)](1)和[Cu2(Hcmdpca)2(phen)4(NO3)2]·4H_2O(2)(H2cmdpca=3,5-二甲基-1-羧甲基-4-吡唑甲酸;phen=菲咯啉),并用红外光谱、元素分析、热重分析和X射线单晶衍射结构分析等对其进行了表征。配合物1和2都属于单斜晶系,1和2的空间群分别为C2/c和P21/c。配合物1的镉离子采取七配位的方式,Hcmdpca-阴离子桥联2个镉离子形成一个双核结构;这些双核结构单元间通过分子间氢键及π-π相互作用构成一个三维的超分子结构。配合物2是一个由2个分立的单核铜配阳离子构成的独立单元,铜离子位于一个畸变的八面体构型中;这些单核铜配阳离子和硝酸根通过静电引力和分子间氢键作用,进一步形成一个三维的超分子结构,而溶剂水分子填充在该结构的空隙中。此外还考察了1和2的热稳定性和固体荧光性质。
[Abstract]:With phenanthroline and 3-dimethyl-1-carboxymethyl-4-pyrazolyl acid as ligands, Two new complexes [Cd (Hcmdpca) _ 2 (phen) (H _ 2O] (1) and [Cu2 (Hcmdpca) _ 2 (phen) _ 4 (NO3) _ 2] 4H_2O (2) (H _ 2cmdpcao _ 3) -dimethyl-1-carboxymethyl -4-pyrazolyl acid were synthesized. Phen=) was characterized by IR, elemental analysis, thermogravimetric analysis and X-ray single crystal diffraction. Complexes 1 and 2 belong to monoclinic system. The space groups of 1 and 2 are C 2 / c and P 21 / c, respectively. The cadmium ions of complex 1 are seven-coordinated, and two cadmium ions are bridged by Hcmdpca- anions to form a binuclear structure, which forms a three-dimensional supramolecular structure by intermolecular hydrogen bonding and 蟺-蟺 interaction. Complex 2 is an independent unit composed of two discrete mononuclear copper-containing cations, and the copper ion is located in a distorted octahedral configuration. These mononuclear copper-containing cations and nitrate further form a three-dimensional supramolecular structure by electrostatic force and intermolecular hydrogen bonding, while solvent water molecules are filled in the void of the structure. The thermal stability and solid fluorescence properties of 1 and 2 were also investigated.
【作者单位】：常州大学石油化工学院江苏省绿色催化材料和技术重点实验室;扬州大学化学化工学院;南京大学配位化学国家重点实验室;
【基金】：国家自然科学基金(No.20971060,21101018) 江苏省高校自然科学研究重大项目(No.16KJA430005) 南京大学配位化学国家重点实验室开放课题江苏省先进催化与绿色制造协同创新中心创新型人才支持项目资助
【分类号】：O641.4

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