[N,N-bis(1-methyl-2-benzimidazolyl)methyl-N-(bis-2-pyridylmethyl)amine] (L1) and [N,N-bis(2-quinolylmethyl)-N-bis(2-pyridyl)methylamine] (L2) were employed to prepare CuII and CuI complexes for spectroscopic and structural characterization. [L1CuII(H2O)](NO3)2 and [L2CuII(NO3)]NO3 have Jahn–Teller distorted octahedral geometries and give rise to isotropic EPR spectra in frozen solution. [L1CuI(CH3CN)]OTf and [L2CuI(CH3CN)]OTf have distorted trigonal bipyramidal and tetrahedral solid-state structures, respectively. The N-donors display labile behavior in solution, based on variable-temperature 1H NMR studies. Addition of trimethylamine N-oxide (Me3NO) to solutions of [L1CuI(CH3CN)]OTf and [L2CuI(CH3CN)]OTf resulted in diamagnetic species tentatively assigned as the corresponding adducts upon replacement of coordinated acetonitrile, based on 1H NMR spectroscopy. Heating [L1CuI(CH3CN)]OTf to 50–60 °C in the presence of Me3NO resulted in its cupric analogue [L1CuII(CH3CN)]2+, as well as a small amount of 2-dipyridylketone, along with other oxidation by-products. In the case of [L2CuI(CH3CN)]OTf, the reaction with Me3NO resulted in the cupric complex bis(2-quinolinecarboxamidato)copper(II), along with 2-dipyridylketone as oxidation products. (Less)

中文翻译：

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氧从三甲胺 N-氧化物转移到由五氮配体支持的 CuI 配合物

[N,N-双(1-甲基-2-苯并咪唑基)甲基-N-(双-2-吡啶基甲基)胺](L1)和[N,N-双(2-喹啉甲基)-N-双(2-吡啶基）甲胺]（L2）用于制备用于光谱和结构表征的 CuII 和 CuI 配合物。[L1CuII(H2O)](NO3)2 和 [L2CuII(NO3)]NO3 具有 Jahn-Teller 扭曲八面体几何形状，并在冷冻溶液中产生各向同性 EPR 光谱。[L1CuI(CH3CN)]OTf 和 [L2CuI(CH3CN)]OTf 分别具有扭曲的三角双锥和四面体固态结构。根据变温 1H NMR 研究，N 供体在溶液中表现出不稳定的行为。将三甲胺 N-氧化物 (Me3NO) 添加到 [L1CuI(CH3CN)]OTf 和 [L2CuI(CH3CN)]OTf 溶液中，导致在替换配位乙腈后暂时将抗磁性物质指定为相应的加合物，基于 1H NMR 光谱。在 Me3NO 存在下将 [L1CuI(CH3CN)]OTf 加热至 50–60 °C 产生其铜类似物 [L1CuII(CH3CN)]2+，以及少量 2-二吡啶基酮，以及其他氧化 -产品。在 [L2CuI(CH3CN)]OTf 的情况下，与 Me3NO 的反应产生铜络合物双（2-喹啉甲酰胺基）铜 (II)，以及作为氧化产物的 2-二吡啶基酮。（较少的）