吡嗪席夫碱银配位聚合物的晶体结构、发光性质和抗菌活性

利用2-乙酰基吡嗪和异烟肼在无水乙醇中反应得到席夫碱化合物N-[(1-吡嗪基)-1-亚甲基]异烟酰肼(L).以L和硝酸银为原料,通过扩散法合成了配位聚合物{[Ag3L2(NO3)2]CH3CN}n,并通过X-射线单晶衍射、元素分析、红外光谱、荧光光谱对其进行结构解析和性质表征.单晶衍射分析结果表明,该配位聚合物属单斜晶...

Crystal Structure,Luminescent Properties and Antibacterial Activity of Silver(I) Coordination Polymer with Pyrazine Schiff-Base Derivative Ligand

Pyrazine Schiff base derivative N-[1-(pyrazin-2-yl)ethylidene] isonicotinohydrazide(L) was obtained by the reaction of 2-acetylpyrazine and isoniazid in anhydrous ethanol. A coordination polymer {[Ag₃L₂(NO₃)₂]CH₃CN}_n was synthesized by diffusion method with the ligand and silver nitrate as raw materials, and its structure and properties were analyzed and characterized by X-ray single crystal diffraction, elemental analysis, IR, and fluorescence spectra. The results of single crystal diffraction analysis show that the complex belongs to monoclinic crystal system, P2₁/c space group, and the crystal cell parameters are a=0.611 70(10) nm, b=1.347 08(3) nm, c=2.018 69(4) nm, V=1.661 06(6) nm³, Z=2, Mr=970.19, Dc=1.940 g/cm³. The ligand molecules form a two-dimensional reticular structure with silver ions as the connecting point. Fluorescence spectrum analysis shows that both the ligand and the complex have better luminescent performance, and the fluorescence intensity of the complex is better than that of the ligand. The antibacterial activity indicates that the complex has good specificity to S. albus, S. luteus, and B. subtilis which has good prospects for medical application.