μ-η<sup>2</sup>:η<sup>2</sup>-Peroxodicopper(II) Complex with a Secondary Diamine Ligand: A Functional Model of Tyrosinase
作者:Liviu M. Mirica、Deanne Jackson Rudd、Michael A. Vance、Edward I. Solomon、Keith O. Hodgson、Britt Hedman、T. Daniel P. Stack
DOI:10.1021/ja056740v
日期:2006.3.1
dioxygen (O(2)) by Cu(I) complexes is an important process in biological systems and industrial applications. In tyrosinase, a binuclear copper enzyme, a mu-eta(2):eta(2)-peroxodicopper(II) species is accepted generally to be the active oxidant. Reported here is the characterization and reactivity of a mu-eta(2):eta(2)-peroxodicopper(II) complex synthesized by reacting the Cu(I) complex of the secondary
Cu(I) 配合物对双氧 (O(2)) 的活化是生物系统和工业应用中的一个重要过程。在酪氨酸酶中,一种双核铜酶 mu-eta(2):eta(2)-peroxodicopper(II) 通常被认为是活性氧化剂。这里报告的是 mu-eta(2):eta(2)-peroxodicopper(II) 配合物的表征和反应性,该配合物是通过与仲二胺配体 N,N'-二叔丁基的 Cu(I) 配合物反应合成的-乙二胺 (DBED), [(DBED)Cu(MeCN)](X) (1.X, X = CF(3)SO(3)(-), CH(3)SO(3)(-), SbF (6)(-), BF(4)(-)), O(2) 在 193 K 得到 [[Cu(DBED)](2)(O(2))](X)(2) ( 2.X(2))。2 的紫外-可见和共振拉曼光谱特征随所用的抗衡阴离子而变化,但不随溶剂的变化而变化。这些结果暗示抗衡阴离子与