|
|||||
|
|
C4 Cumulene and the Corresponding Air‐Stable Radical Cation and Dication |
|
| Authors: | Yan Li Dr Kartik Chandra Mondal Dr Prinson P Samuel Prof Dr Hongping Zhu Claudia M Orben Dr Saravanan Panneerselvam Priv‐Doz Dr Birger Dittrich Dr Brigitte Schwederski Prof Dr Wolfgang Kaim Totan Mondal Dr Debasis Koley Prof Dr Herbert W Roesky |
| Institution: | 1. State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian, 361005 (China);2. Institut für Anorganische Chemie, Georg‐August‐Universit?t, Tammannstrasse 4, 37077 G?ttingen (Germany);3. Deutsches Elektronen‐Synchrotron, Notke Strasse 85, 22607 Hamburg (Germany);4. Universit?t Hamburg, Martin‐Luther‐King‐Platz 6, 20146‐Hamburg (Germany);5. Universit?t Stuttgart, Institut für Anorganische Chemie, Pfaffenwaldring 55, 70569 Stuttgart (Germany);6. Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER), Kolkata Mohanpur Campus, Mohanpur 741?252 (India) |
| Abstract: | A neutral C4 cumulene 1 that includes a cyclic alkyl(amino) carbene (cAAC), its air‐stable radical cation 1 .+, and dication 1 2+ have been synthesized. The redox property of 1 .+ was studied by cyclic voltammetry. EPR and theoretical calculations show that the unpaired electron in 1 .+ is mainly delocalized over the central C4 backbone. The commercially available CBr4 is utilized as a source of dicarbon in the cumulene synthesis. |
| Keywords: | cumulenes cyclic alkyl(amino) carbenes dications radical ions theoretical calculations |