一个新的双核锌(Ⅱ)配合物的水热合成、晶体结构和荧光性质

Hydrothermal Synthesis,Crystal Structure and Fluorescence Properties of a New Dinuclear Zn(Ⅱ) Complex

摘要:

本文由5-溴-2-羟基苯基乙酮和4-硝基苯甲酰肼在乙醇溶剂中反应得到5-溴-2-羟基苯基乙酮-4-硝基苯甲酰腙（H2L），以该酰腙为配体，与吡啶、硝酸锌反应，水热合成制得一个新的双核配合物5-溴-2-羟基苯基乙酮-4-硝基苯甲酰腙吡啶锌(Ⅱ) (CCDC:851546)，并培养成单晶。通过元素分析、红外分析和X射线单晶衍射对其结构进行了表征。该配合物晶体属单斜晶系，空间群为P21/c，晶胞参数a=1.17989(9) nm，b=1.64805(12) nm，c=1.02300(8) nm，β= 96.9670(10)º，Dc=1.751 mg/m3。荧光光谱表明，配体和配合物均具有荧光性能，在475.0 nm处配合物的荧光强度得到了明显增强。

Abstract:

In this paper, a compound of 5-bromo-2-hydroxyphenyl methyl ketone-4-nitrobenzoyl hydrazone (H2L) was synthesized through the reaction of 5-bromo-2-hydroxyphenyl ethyl ketone with 4-nitrobenzoyl hydrazine and ethanol. A complex of new binuclear 5-bromo-2-hydroxyphenyl (methyl) methylene-4-nitrobenzohydrazide pyridinezinc(II) (CCDC:851546) was hydrothermal synthesized through the reaction of the ligand with pyridine and zinc nitrate, and was subsequently into a single crystal. The compound was characterized by elemental analysis, IR and the crystal structure was determined by X-ray single crystal diffraction. The results show that the crystal belongs to the monoclinic system with space group P21/c, with a=1.17989(9) nm, b=1.64805(12) nm, c=1.02300(8) nm, β= 96.9670(10)º, Dc=1.751 mg/m3. Fluorescence spectra show that both the ligand and complex have fluorescent properties, the fluorescence intensity of complex has been significantly enhanced in 475.0 nm.