Tuning the catecholase activity of bis(pyrazolyl)methane-based copper(II) complexes by substitutions of the ligand core: unraveling a dual O2/H2O2 oxidation mechanism
作者:Nuwanthaka P. Jayaweera、Ashley E. Hall、Ashton A. Wilson、Mary E. Konkle、Kraig A. Wheeler、Radu F. Semeniuc
DOI:10.1016/j.ica.2020.119507
日期:2020.6
a bridge between two copper(II) centers; the remaining coordination sites of the metals are filled by the deprotonated N-amide atoms, the nitrogen atoms originating from the bis(pyrazolyl)methane groups and one exogenous hydroxide bridge. The catecholase-type activity of these dicopper complexes was studied in methanol, using a combination of aerobic and anaerobic methods. These investigations revealed
摘要基于通式R1R2R1-C6(OH)[C(O)-NH-CH2-CH(pz)2] 2(pz =吡唑基环,R1 = R2 = H:HHH-Cu2; R1 = H,R2 = t-Bu:HButH-Cu2; R1 = Me,R2 = H:MeHMe-Cu2; R1 = Me,R2 = Br:MeBrMe-Cu2; R1 = Me,R2 =制备了NO 2:MeNO 2 Me-Cu 2),并以溶液和固态对其进行了表征。酚盐部分充当两个铜(II)中心之间的桥;金属的其余配位点由去质子化的N-酰胺原子,源自双(吡唑基)甲烷基团的氮原子和一个外源氢氧化物桥填充。结合好氧和厌氧方法,在甲醇中研究了这些双铜配合物的儿茶酚酶类型活性。