One-Electron Oxidation of an Organic Molecule by B(C6F5)3; Isolation and Structures of Stable Non-para-substituted Triarylamine Cation Radical and Bis(triarylamine) Dication Diradicaloid
2013
Zheng, Xin | Wang, Xingyong | Qiu, Yunfan | Li, Yuantao | Zhou, Chenkun | Sui, Yunxia | Li, Yizhi | Ma, Jing | Wang, Xinping
The methylene-bridged triphenylamine 2 has been oxidized to planar radical cation 2•⁺ by B(C₆F₅)₃ or Ag⁺. Further reaction of 2•⁺[Al(ORF)₄]⁻ and 2 with trace amounts of silver salt resulted in dication 3²⁺, providing a rare example of structurally characterized bis(triarylamine) “bipolarons”. 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’s hydrocarbons.
Show more [+] Less [-]AGROVOC Keywords
Bibliographic information
This bibliographic record has been provided by National Agricultural Library