Preparation, spectral and biological investigation of formaldehyde-based ligand containing piperazine moiety and its various polymer metal complexes
作者:Shamim Ahmad Khan、Nahid Nishat、Shadma Parveen、Raza Rasool
DOI:10.1016/j.saa.2011.06.012
日期:2011.10
characterized by elemental analysis, IR, (1)H NMR and electronic spectral studies. The thermal stability was determined by thermogravimetric analysis and thermal data revealed that all the polymer metal complexes show good thermal stability than their parent ligand. Electronic spectral data and magnetic moment values revealed that polymer metal complexes of Mn(II), Co(II) and Ni(II) show an octahedral geometry
在碱催化剂的存在下,通过水杨酸,甲醛和哌嗪的缩合反应合成了一种新的含哌嗪部分的四齿水杨酸-甲醛配体,用于制备锰(II),钴等金属离子配位聚合物。 (II),铜(II),镍(II)和锌(II)。通过元素分析,IR,(1)H NMR和电子光谱研究对所有合成的高分子化合物进行了表征。通过热重分析确定热稳定性,并且热数据表明,所有聚合物金属配合物均比其母体配体表现出良好的热稳定性。电子光谱数据和磁矩值表明,Mn(II),Co(II)和Ni(II)呈现八面体几何形状,而Cu(II)和Zn(II)分别呈现扭曲的八面体和四面体几何形状。配体和配位聚合物的抗菌筛选是通过琼脂井扩散法对各种细菌和真菌进行的。从数据可以明显看出,螯合时抗菌和抗真菌活性增强,所有聚合物金属配合物均比其母体配体表现出优异的抗菌活性。