Copper complexes of the non-innocent β-diketiminate ligand containing phenol groups
作者:June Takaichi、Kei Ohkubo、Hideki Sugimoto、Motohiro Nakano、Daisuke Usa、Hiroaki Maekawa、Nobutaka Fujieda、Nagatoshi Nishiwaki、Shu Seki、Shunichi Fukuzumi、Shinobu Itoh
DOI:10.1039/c2dt32413j
日期:——
A new type of non-innocent β-diketiminate ligand having redox active phenol groups (LH33, fully protonated form) has been developed, and the structure, physical properties and reactivity of the supported copper(II) complex [CuII(L3â3â)]â (L3â3â, fully deprotonated tri-anionic form) as well as the one-electron and two-electron oxidised complexes, [CuII(LË2â)] and [CuII(Lââ)]+, have been examined in detail. The two-electron oxidised form [CuII(Lââ)]+ exhibited hydrogen atom abstraction ability from 1,4-cyclohexadiene (CHD), whereas the one-electron oxidised form [CuII(LË2â)] was found to disproportionate into [CuII(L3â3â)]â and [CuII(Lââ)]+ during the course of the reaction with CHD.
一种新型的具有氧化还原活性酚基的非无害β-二酮胺配体(LH33,完全质子化形式)已经被开发出来,并详细研究了支持的铜(II)络合物[CuII(L3â3â)]â(L3â3â,完全去质子化的三负离子形式)及其一电子和二电子氧化的络合物[CuII(LË2â)]和[CuII(Lââ)]+的结构、物理特性和反应性。二电子氧化形式[CuII(Lââ)]+表现出了从1,4-环己二烯(CHD)中抽取氢原子的能力,而一电子氧化形式[CuII(LË2â)]在与CHD反应过程中发现会不成比而生成[CuII(L3â3â)]â和[CuII(Lââ)]+。