Air oxygenation chemistry of 4-TBC catalyzed by chloro bridged dinuclear copper(<scp>ii</scp>) complexes of pyrazole based tridentate ligands: synthesis, structure, magnetic and computational studies
作者:Ishita Banerjee、Pabitra Narayan Samanta、Kalyan Kumar Das、Rodica Ababei、Marguerite Kalisz、Adrien Girard、Corine Mathonière、M. Nethaji、Rodolphe Clérac、Mahammad Ali
DOI:10.1039/c2dt30983a
日期:——
bis(μ-Cl) bridged copper(II) complexes, [Cu2(μ-Cl)2(LX)2](ClO4)2 (LX = N,N-bis[(3,5-dimethylpyrazole-1-yl)-methyl]benzylamine with X = H(1), OMe(2), Me(3) and Cl(4)), have been synthesized and characterized by the single crystal X-ray diffraction method. In these complexes, each copper(II) center is penta-coordinated with square-pyramidal geometry. In addition to the tridentate LX ligand, a chloride ion
四个双核双(μ-Cl)桥连的铜(II)配合物[Cu 2(μ-Cl)2(L X)2 ](ClO 4)2(L X =N,N-双[[(3,5-二甲基吡唑-1-基)-甲基]苄胺X = H(1),OMe(2),Me(3)和Cl(4))已经通过单晶X射线衍射法合成并表征。在这些络合物中,每个铜(II)中心都与方形金字塔形几何形状五角坐标。除三齿L X配体外,氯离子占据正方形平面的最后位置。该氯离子还在其轴向位置上键合至相邻的Cu(II)部位,形成SP- I双核Cu(II)单元,该单元显示出较小的分子内铁磁相互作用,并得到DFT计算的支持。配合物1-3表现出甲基单加氧酶(p MMO)行为并氧化4-叔丁基邻苯二酚(4-TBCH 2)与分子氧甲醇或MeCN 4-叔丁基苯醌(4- TBQ),5-甲氧基-4-叔丁基苯醌(5-的MeO-4-TBQ)与6,6'-卜沿着主要产物吨-联苯-3,4,3',4 ' -四醇等