Unveiling the effects of the in situ generated arene anion radical and imine radical on catecholase like activity: a DFT supported experimental investigation
作者:Sanchari Dasgupta、Jaydeep Adhikary、Sanjib Giri、Antonio Bauza、Antonio Frontera、Debasis Das
DOI:10.1039/c7dt00733g
日期:——
reaction a single isotropic signal at g = 1.97 is obtained which is most likely due to imine radical formation. On the other hand, for complex 2 catalyzed reaction the spectrum shows a signal with hyperfine splitting (g = 2.11, 2.05 and 1.9), thereby suggesting the generation of a new radical i.e. an arene anion radical in this study on catecholase activity. Extensive DFT calculations have been performed
两种新的双核镍(II)配合物,即[Ni 2(L 1)2(OAc)2(H 2 O)2 ]·CH 3 CN(1)和[Ni 2(L 2)2(SCN)2(CH)由设计的席夫碱配体4-溴-2-[(2-羟基-1,1-二甲基-乙基亚氨基)-甲基]-苯酚(HL 1)合成了3 OH)2 ]·CH 3 OH(2))及其还原的类似物4-溴-2-[(2-羟基-1,1-二甲基-乙基氨基)-甲基]-苯酚(HL 2), 分别。既1和2的特点是通常的物理化学技术(紫外-可见,FT-IR,ESI-MS研究和单晶XRD)和它们的变温磁性研究已经执行。双核配合物1和2中的镍(II)中心通过桥联苯氧基氧的参与反铁磁耦合。从ESI-MS研究中可以明显看出,在乙腈溶液中1和2都保留了其双核结构的完整性。1和2的儿茶酚酶样活性已在乙腈培养基中使用3,5-二叔胺进行了测定-丁基邻苯二酚(3,5-DTBC)作为模型底物。配合物1显示出比配