Catecholase activity of a self-assembling dimeric Cu(II) complex with distant Cu(II) centers
作者:Shuranjan Sarkar、Arum Sim、Sunghwan Kim、Hong-In Lee
DOI:10.1016/j.molcata.2015.08.007
日期:2015.12
Catecholase activity and its mechanistic investigation of a self-assemblying dimeric Cu(II) complex, Cu2L2, where L is N,N′-(ethane-1,2-diyldi-o-phenylene)-bis(pyridine-2-carboxamidide), is presented. The complex was constructed by a spontaneous self-assembly of the organic ligand and Cu(II) ion. X-ray crystallography of Cu2L2(CH3OH)2·2CH3OH, found that the coordination geometry of the Cu(II) site was a distorted
自组装二聚体Cu(II)Cu 2 L 2(其中L为N,N '-(乙烷-1,2-二基二邻-亚苯基)-双吡啶)的儿茶酚酶活性及其机理研究-carboxamidide)。通过有机配体和Cu(II)离子的自发自组装构建复合物。Cu 2 L 2(CH 3 OH)2 ·2CH 3 OH的X射线晶体学分析表明,Cu(II)位点的配位几何形状为扭曲的方锥,两个Cu(II)离子相距6.992Å。尽管金属中心较远,但Cu 2 L 2当在空气中在碱性条件下在Michaelis-Menten的k cat为720 h -1的条件下,在空气中用Cu 2 L 2处理3,5-二叔丁基邻苯二酚(3,5-H 2 dtbc)时,显示出较高的儿茶酚酶活性模型。从反应混合物的UV-vis动力学,电子顺磁共振(EPR)和高分辨率电喷雾电离质谱(ESI MS)测量中收集的信息可能会提示有关Cu 2 L 2儿茶酚酶活性的机制途径的建议。其中每个铜(II)氧化位点3