@article { ISI:000419594700023,
	title = {Mono- and Bis(imidazolidinium ethynyl) Cations and Reduction of the Latter To Give an Extended Bis-1,4-([3]Cumulene)-p-carboquinoid System},
	journal = {ANGEWANDTE CHEMIE-INTERNATIONAL EDITION},
	volume = {57},
	number = {3},
	year = {2018},
	month = {JAN 15},
	pages = {749-754},
	abstract = {An extended pi-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 pi-accepting properties of the capping NHCs.},
	issn = {1433-7851},
	doi = {10.1002/anie.201711031},
	author = {Barry, Brian M. and Soper, R. Graeme and Hurmalainen, Juha and Mansikkamaki, Akseli and Robertson, Katherine N. and McClennan, William L. and Veinot, Alex J. and Roemmele, Tracey L. and Werner-Zwanziger, Ulrike and Boer{\'e}, R. T. and Tuononen, Heikki M. and Clyburne, Jason A. C. and Masuda, Jason D.}
}
