Formation of a Bridged Butterfly-Type μ-η2:η2-Peroxo Dicopper Core Structure with a Carboxylate Group

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• 作者：Yasuhiro Funahashi ; Tomohide Nishikawa ; Yuko Wasada-Tsutsui ; Yuji Kajita ; Syuhei Yamaguchi ; Hidekazu Arii ; Tomohiro Ozawa ; Koichiro Jitsukawa ; Takehiko Tosha ; Shun Hirota ; Teizo Kitagawa ; Hideki Masuda
• 刊名：Journal of the American Chemical Society
• 出版年：2008
• 出版时间：December 10, 2008
• 年：2008
• 卷：130
• 期：49
• 页码：16444-16445
• 全文大小：147K
• 年卷期：v.130,no.49(December 10, 2008)
• ISSN：1520-5126

文摘

A new μ-η²:η²-peroxo dicopper(II) complex, [Cu^II₂(αSp)₂(μ-η²:η²-O₂)(Bz^-)]SbF₆ (αSp = α-isosparteine, Bz^- = benzoate) was synthesized by oxygenation of [Cu^I(αSp)(CH₃CN)]SbF₆ with Bz^- at −80 °C in acetone. X-ray crystallographic analysis of the dark blue crystal revealed that the “bridged butterfly core” is formed by bridging Bz^- bound in the axial position. The weaker σ-electron donation of αSp causes the axial coordination of Bz^- to stabilize the butterfly-type μ-η²:η²-peroxo dicopper(II) species as an intermediate of stepwise O₂-activation to bis(μ-oxo) dicopper(III) species.