One-Electron Oxidation of an Organic Molecule by B(C6F5)3; Isolation and Structures of Stable Non-para-substituted Triarylamine Cation Radical and Bis(triarylam

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• 作者：Xin Zheng ; Xingyong Wang ; Yunfan Qiu ; Yuantao Li ; Chenkun Zhou ; Yunxia Sui ; Yizhi Li ; Jing Ma ; Xinping Wang
• 刊名：Journal of the American Chemical Society
• 出版年：2013
• 出版时间：October 9, 2013
• 年：2013
• 卷：135
• 期：40
• 页码：14912-14915
• 全文大小：299K
• 年卷期：v.135,no.40(October 9, 2013)
• ISSN：1520-5126

文摘

The methylene-bridged triphenylamine 2 has been oxidized to planar radical cation 2^鈥? by B(C₆F₅)₃ or Ag⁺. Further reaction of 2^鈥?[Al(OR_F)₄]^{鈭?/sup> and 2 with trace amounts of silver salt resulted in dication 32+, providing a rare example of structurally characterized bis(triarylamine) 鈥渂ipolarons鈥? 32+ can be directly prepared by the reaction of 3 with 2 equiv of Ag+. X-ray structural analysis together with theoretical calculation shows that 32+ has singlet diradical character and is analogous to Chichibabin鈥檚 hydrocarbons.}