Identification of an "End-on" Nickel-Superoxo Adduct, [Ni(tmc)(O2)]+

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• 作者：Matthew T. Kieber-Emmons ; Jamespandi Annaraj ; Mi Sook Seo ; Katherine M. Van Heuvelen ; Takehiko Tosha ; Teizo Kitagawa ; Thomas C. Brunold ; Wonwoo Nam ; Charles G. Riordan
• 刊名：Journal of the American Chemical Society
• 出版年：2006
• 出版时间：November 8, 2006
• 年：2006
• 卷：128
• 期：44
• 页码：14230 - 14231
• 全文大小：245K
• 年卷期：v.128,no.44(November 8, 2006)
• ISSN：1520-5126

文摘

An "end-on" Ni²⁺-superoxo adduct has been prepared via two independent synthetic routes and its structure ascertained by spectroscopic and computational methods. The new structure type in nickel coordination chemistry is supported by resonance Raman and EPR spectroscopic features, the former displaying a high frequency (O-O) mode (1131 cm^-1) consistent with significant superoxo character. The Ni²⁺-superoxo adduct oxidizes PPh₃ to OPPh₃ in quantitative yield.