Structural and photophysical properties of lanthanide complexes with N'- (2- methoxybenzylidene) - 2-pyridinecarbohydrazide Schiff base ligand: Catalyzed oxidation of anilines with hydrogen peroxide
作者:Ziyad A. Taha、Ahmed K. Hijazi
DOI:10.1016/j.molstruc.2021.130451
日期:2021.8
properties of L and 1 – 6 in DMF solution have been investigated and reported. Complexes 1 - 6 catalyze the oxidation of aniline 1a and its derivatives 1b - 1g using H2O2 as an oxygen source at an ambient conditions. Aniline is selectively converted to nitroso-benzene in the presence of complexes 2 and 3. Complexes 4 – 6 gave mixtures of nitrozo- and azoxybenzenes. With complex 1 a mixture of nitroso-
几种镧系元素(III)络合物 Ln:La,1; Sm,2;Eu,3; Gd,4;Tb,5;的Dy,6 }与席夫碱配体,-N' - (2-甲氧基亚苄基) - 2- pyridinecarbohydrazide,大号,已经合成。这些具有通式LaL(NO 3)3 .xH 2 O和LnL 2(NO 3)3 .xH 2 O以及配体L的配合物已经通过元素分析,光谱分析(IR,1 H和13 C NMR)进行了表征。),摩尔电导率和热重分析。在建议的结构复杂如图1所示,La(III)离子为十坐标。三个双齿硝酸盐离子可满足六个配位点,一个位点被H 2 O占据,其余三个位点被一个中性L的ONO占据。与此相反在复合物的所提出的结构中的镧系元素离子2 - 6,是由12两个三二齿配位ONO大号和三个二齿硝酸根阴离子。的光物理特性大号和1 - 6的DMF溶液进行了研究和报告。配合物1 - 6苯胺的催化氧化1A在环境条件下使用H