one-electron interconversions of isolable NiIII and NiIV complexes through their reactions with carbon-centered radicals (R•). First, model NiIII complexes are shown to react with alkyl and aryl radicals to afford NiIV products. Preliminary mechanistic studies implicate a pathway involving direct addition of a carbon-centered radical to the NiIII center. This is directly analogous to the known reactivity of
本文描述了可分离的 NiIII 和 NiIV 配合物通过与碳中心自由基 (R•) 的反应进行的单电子互变。首先,模型 NiIII 配合物显示出与烷基和芳基反应以提供 NiIV 产品。初步的机理研究暗示了一种途径,涉及直接将碳中心自由基添加到 NiIII 中心。这直接类似于 NiIII 配合物与 R• 的已知反应性,该步骤通常涉及催化。其次,NiIV-
CH3 复合物显示出与芳基和烷基反应,通过提出的 SH2 型机制提供 CC 键。该途径用于在温和条件下形成具有挑战性的 H3C-
CF3 键。全面的,