Synthesis, crystal structures, and biological evaluation of Cu(II) and Zn(II) complexes of 2-benzoylpyridine Schiff bases derived from S-methyl- and S-phenyldithiocarbazates
作者:Ming Xue Li、Li Zhi Zhang、Chun Ling Chen、Jing Yang Niu、Bian Sheng Ji
DOI:10.1016/j.jinorgbio.2011.09.034
日期:2012.1
(HL2) and their transition metal complexes [Cu2(L1)2(CH3COO)](ClO4) (1), [Zn2(L1)2(ClO4)2] (2), [Zn(L2)2](3) have been prepared and characterized by elemental analysis, IR, MS, NMR and single-crystal X-ray diffraction studies. In the solid state, each of two Schiff bases remains in its thione tautomeric form with the thione sulfur atom trans to the azomethine nitrogen atom. Under similar prepared
2-苯甲酰基吡啶S-甲基二硫代氨基甲酸酯(HL 1)和2-苯甲酰基吡啶S-苯基二硫代氨基甲酸酯(HL 2)的两个NNS三齿席夫碱配体及其过渡金属配合物[Cu 2(L 1)2(CH 3 COO)](ClO 4))(1),[Zn 2(L 1)2(ClO 4)2 ](2),[Zn(L 2)2 ](3)已通过元素分析,IR,MS,NMR和单晶X射线衍射研究制备并表征。在固态下,两个席夫碱中的每一个都保持其硫酮互变异构形式,其中硫酮硫原子转移到偶氮甲碱氮原子上。在相似的准备条件下,三种新的配合物根据它们的配位偏好表现出明显不同的配位模式。S桥联的双核络合物[Cu 2(L 1)2(CH 3 COO)](ClO 4)(1)中的每个铜原子都被五个供体原子以方金字塔形(4 + 1)包围。[Zn 2(L 1)2(ClO 4)2 ](2)是二聚体,其中每个锌原子采用七坐标扭曲的五边形双锥体几何形状,而单核[Zn(L