Superoxido copper complexes play an important role as usually short‐lived intermediates in biology and chemistry. The unusual stability of an end‐on superoxido copper complex observed in an oxygen‐enhanced atom transfer radical polymerization (ATRP) led to a detailed mechanistic investigation of the formation of [CuII(Me6tren)(O2•−)]+ (Me6tren = tris(2‐dimethyl‐aminoethyl)amine) under ambient conditions. The persistence of the superoxido copper complex could be explained by a reaction cycle including the peroxido complex [(Me6tren)2CuII2(O2)]2+ together with [CuI(Me6tren)(DMSO)]+ and [CuII(Me6tren)(OH)]+ in the overall reaction.

中文翻译：

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端接超氧化铜 (II) 络合物在环境条件下的异常稳定性

超氧化铜配合物作为生物学和化学中通常短暂的中间体发挥着重要作用。在氧增强原子转移自由基聚合 (ATRP) 中观察到的端接超氧化铜络合物的异常稳定性导致了对 [CuII(Me6tren)(O2•−)]+ (Me6tren = tris) 形成的详细机制研究(2-二甲基氨基乙基)胺)在环境条件下。超氧化铜络合物的持久性可以通过包括过氧化物络合物 [(Me6tren)2CuII2(O2)]2+ 以及 [CuI(Me6tren)(DMSO)]+ 和 [CuII(Me6tren)(OH) 的反应循环来解释]+ 在整个反应中。