Copper(II)-faciliated synthesis of substituted thioethers and 5-substituted 1H-tetrazoles: Experimental and theoretical studies
作者:Samaresh Layek、Bhumika Agrahari、Shuvankar Dey、Rakesh Ganguly、Devendra D. Pathak
DOI:10.1016/j.jorganchem.2019.06.008
日期:2019.9
thermo-gravimetric (TG) analysis and Cyclic Voltammetry. The molecular structures of both complexes have also been determined by single crystal X-ray crystallography, which confirmed the coordination of Schiff base ligands through N, O donor atoms and distorted square planar geometry around the Cu(II) ion. Both complexes were found to be good homogeneous catalysts for the synthesis of a wide range of substituted
通过Cu(CH 3 COO)2的反应合成了基于苯甲酰肼的席夫碱连接的两种新的铜(II)配合物[Cu(L 1)2 ] (1)和[Cu(L 2)2 ] (2)。 ·具有各自的席夫碱配体1-[(4-硝基苯基)亚乙基]苯并酰肼(HL 1)或1-[(4-甲氧基苯基)亚乙基]苯并酰肼(HL 2)的H 2 O)。两种配合物均被分离为绿色固体,并通过元素分析,FT-IR,EPR,热重(TG)分析和循环伏安法进行了全面表征。两种配合物的分子结构也已通过单晶X射线晶体学测定,这证实了席夫碱配体通过N,O供体原子的配位和Cu(II)离子周围扭曲的正方形平面几何结构。发现这两种配合物都是合成大量取代硫醚和5-取代1 H的良好均相催化剂-四唑在低催化剂负载量(0.5摩尔%)下的收率分别为92%和93%。从DFT计算中可以看出,结合角和距离与实验结果相吻合。根据DFT研究计算得出,HOMO和LUMO之间的能量差分别为复合物1和复合物2的5