Synthesis and reactivity of (μ-η2:η2-peroxo)dicopper(II) complexes with dinucleating ligands: Hydroxylation of xylyl linker with a NIH shift
作者:Takahiro Matsumoto、Hideki Furutachi、Shigenori Nagatomo、Takehiko Tosha、Shuhei Fujinami、Teizo Kitagawa、Masatatsu Suzuki
DOI:10.1016/j.jorganchem.2006.05.068
日期:2007.1
New hexadentate dinucleating ligands having a xylyl linker, X–L–R, were synthesized, where X–L–R = 1,3-bis[bis(6-methyl-2-pyridylmethyl)aminomethyl]-2,4,6-trimethybenzene (Me2–L–Me) and 1,3-bis[bis(6-methyl-2-pyridylmethyl)aminomethyl]-2-fluorobenzene (H–L–F). They form dinuclear copper(I) complexes, [Cu2(X–L–R)]2+ (Me2–L–Me (1) and H–L–F (2)). The copper(I) complexes in acetone at −78 °C react with
合成了具有二甲苯基接头X–L–R的新六齿双核配体,其中X–L–R = 1,3-双[双(双(6-甲基-2-吡啶基甲基)氨基甲基] -2,4,6-三甲基苯(Me 2 –L–Me)和1,3-双[双(6-甲基-2-吡啶基甲基)氨基甲基] -2-氟苯(HL–F)。它们形成双核铜(I)络合物[Cu 2(X–L–R)] 2+(Me 2 –L–Me(1)和H–L–F(2))。在丙酮中的铜(I)配合物在-78℃下被O反应2,以产生分子内和分子间(μ-η 2:η 2 μ-过氧)取决于配合物的浓度亚铜(II)物种:两种复合产生分子内(μ-η 2:η2-过氧)双铜(II)物种[Cu 2(O 2)(X–L–R)] 2+(1 -O 2和2 -O 2)的浓度低于〜5 mM,而低于〜60 mM ,两个复合物的分子间产生(μ-η 2:η 2 μ-过氧)亚铜(II)物种,这是由电子和共振拉曼光谱证实。的电子光谱1 -O 2在丙酮中在低于〜5