NDLI: A fascinating multifaceted redox-active chelating ligand: introducing the <i>N</i>,<i>N</i>′-dimethyl-3,3′-biquinoxalinium “methylbiquinoxen” platform

Content Provider	Royal Society of Chemistry (RSC)
Author	Sproules, Stephen Fink, Karin Powell, Annie K. Levillain, Eric Leblanc, Nicolas Sanguinet, Lionel Rosa, Patrick Alévêque, Olivier
Copyright Year	2016
Abstract	To intimately combine a chelating ligand function with the numerous properties of a viologen-like redox-active centre would offer a rare possibility to design controllable multi-redox states, whose properties arise from strongly correlated phenomena between the organic ligand as well as with any metalloid coordinated centres. Such a concept previously proved to be feasible, however is not widely applicable owing to challenges in terms of synthesis, isolation, and aerial sensitivity of both the ligand and its metal complexes. Here we report the first stable example of such a redox-active molecule, N,N′-dimethyl-3,3′-biquinoxalinium2+/˙+/0 “methylbiquinoxen, MBqn2+/˙+/0”, which shows a rich redox chemistry and chelates a metal ion in the case of the metal complex [CdCl2(MBqn0)]. This goes beyond what is possible to achieve using viologens, which are limited by not providing chelation as well as having no accessible biradicaloid state, corresponding to the neutral direduced MBqn0 open-shell behaviour we observe here.
Starting Page	3820
Ending Page	3828
Page Count	9
File Format	HTM / HTML PDF
ISSN	20416520
Volume Number	7
Issue Number	6
Journal	Chemical Science
DOI	10.1039/c5sc04904k
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Subscribed
Subject Keyword	Ligand Redox Ion Metalloid
Content Type	Text
Resource Type	Article
Subject	Chemistry

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