铜(II)芳基物质是铜催化交叉偶联反应中的关键中间体。由辅助β-二酮亚胺配体负载的新型三配位铜(II)芳基[Cu II ] -C 6 F 5在醇铜[Cu II ] -O t Bu与B(C 6 F 5)之间的反应中形成3。晶体学,光谱学和DFT研究揭示了这些Cu(II)有机金属配合物的几何和电子结构。[铜的反应II ] -C 6 ˚F 5与自由基NO (克)在CN键形成的结果,得到[铜](η 2 -OnC6 F 5)。值得注意的是,在[Cu II ] -C 6 F 5中添加酚酸根阴离子PhO –直接得到二芳基醚PhO-C 6 F 5,同时生成铜(I)物种[Cu I ](溶剂)和{[Cu I ] -C 6 F 5 } -。实验和计算分析支持[Cu II ] -C 6 F 5和{[Cu II ](C 6 F 5)(OPh)} -之间的氧化还原歧化,得到{[CuI ] -C 6 F 5 } -和[Cu
Copper
<i>C</i>
‐Nitroso Compounds: Activation of Hydroxylamines and NO Reactivity
作者:Kamille D. Williams、Allan Jay P. Cardenas、Jennifer D. Oliva、Timothy H. Warren
DOI:10.1002/ejic.201300378
日期:2013.8.6
6 results in the formation of copper(II) diazeniumdiolates [[Me2NNF6]Cu(κ2-O2N2Ph)] (7) and [iPr2TpCu(κ2-O2N2Ph)] (8), which exhibit square-planar and square-pyramidal geometries, respectively. These findings give insight into PhNO and PhHNOH reactivity at copper(I) and foreshadow possible transformations of considerably more reactive nitroxyl (HNO) and hydroxylamine (H2NOH) analogues.
Intermediates in Reactions of Copper(I) Complexes with <i>N</i>-Oxides: From the Formation of Stable Adducts to Oxo Transfer
作者:Sungjun Hong、Aalo K. Gupta、William B. Tolman
DOI:10.1021/ic900435p
日期:2009.7.20
Reactions of copper(I) complexes of bidentate N-donor supporting ligands with pyridine- and trimethylamine-N-oxides or PhIO were explored. Key results include the identification of novel copper(I) N-oxide adducts, aryl substituent hydroxylation, and bis(μ-oxo)dicopper complex formation via a route involving oxo transfer.
研究了双齿 N 供体支持配体的铜 (I) 配合物与吡啶-和三甲胺-N-氧化物或 PhIO 的反应。主要结果包括新型铜 (I) N-氧化物加合物的鉴定、芳基取代基羟基化和双(μ-氧代)二铜配合物通过涉及氧代转移的路线形成。