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C 4 Cumulene and the Corresponding Air‐Stable Radical Cation and Dication
Author(s) -
Li Yan,
Mondal Kartik Chandra,
Samuel Prinson P.,
Zhu Hongping,
Orben Claudia M.,
Panneerselvam Saravanan,
Dittrich Birger,
Schwederski Brigitte,
Kaim Wolfgang,
Mondal Totan,
Koley Debasis,
Roesky Herbert W.
Publication year - 2014
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201310975
Subject(s) - dication , cumulene , delocalized electron , unpaired electron , chemistry , cyclic voltammetry , electron paramagnetic resonance , radical ion , carbene , photochemistry , redox , ion , molecule , organic chemistry , electrochemistry , electrode , physics , nuclear magnetic resonance , catalysis
A neutral C 4 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 C 4 backbone. The commercially available CBr 4 is utilized as a source of dicarbon in the cumulene synthesis.