Structural characterization and catalytic activities of copper complexes with pyridine-amine-phosphine-oxide ligand
作者:Weiwen Tsai、Yi-Hung Liu、Shie-Ming Peng、Shiuh-Tzung Liu
DOI:10.1016/j.jorganchem.2004.09.054
日期:2005.1
Both complexes were characterized by EPR, UV–Vis spectroscopy and X-ray diffraction. Both copper(II) complexes are in a square-pyramidal geometry. Single crystal structure of the copper complex reveals that the copper center is surrounded by three nitrogen donors and two chloride for 4; three nitrogen donors, water and oxygen donor from the moiety of phosphine oxide for 5. Complexation of 1 with CuCl
通过邻-二苯基膦基苯胺与2-吡啶甲醛的缩合反应,合成了一种新的含吡啶,胺和氧化膦供体体系的四齿(1)。的反应1与氯化亚铜的等摩尔量的2和Cu(CLO 4)2提供的[氯化亚铜形成2(1)](4)和[[铜(1)(H 2 O)](CLO 4)2 ] (5)。配体1在4中表现为三齿,而在5中表现为四齿。两种配合物均通过EPR,UV-Vis光谱和X射线衍射进行表征。两种铜(II)配合物均呈方锥几何形状。铜配合物的单晶结构揭示了铜中心由三个氮供体和两个氯化物为包围4 ; 从氧化膦的部分得到三个氮供体,水和氧供体5。1与CuCl在二氯甲烷中的络合作用导致形成相应的铜(I)物种,该物种在好氧条件下催化苄醇的氧化。