In:
Angewandte Chemie, Wiley, Vol. 130, No. 3 ( 2018-01-15), p. 757-762
Abstract:
An extended π‐system containing two [3]cumulene fragments separated by a p‐carboquinoid and stabilized by two capping N‐heterocyclic carbenes (NHCs) has been prepared. Mono‐ and bis(imidazolidinium ethynyl) cations have also been synthesized from the reaction of an NHC with phenylethynyl bromide or 1,4‐bis(bromoethynyl)benzene. Cyclic voltammetry coupled with synthetic and structural studies showed that the dication is readily reduced to a neutral, singlet bis‐1,4‐([3] cumulene)‐p‐carboquinoid as a result of the π‐accepting properties of the capping NHCs.
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.201711031
Language:
English
Publisher:
Wiley
Publication Date:
2018
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1479266-7
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