Quinoidal Azaacenes: 99 % Diradical Character

Intorp, S.N.; Hodecker, M.; Müller, M.; Tverskoy, O.; Rosenkranz, M.; Dmitrieva, E.; Popov, A.A.; Rominger, F.; Freudenberg, J.; Dreuw, A.; Bunz, U.H.F.

doi:https://doi.org/10.34657/3556

Quinoidal Azaacenes: 99 % Diradical Character

dc.bibliographicCitation.firstPage	12396	eng
dc.bibliographicCitation.issue	30	eng
dc.bibliographicCitation.journalTitle	Angewandte Chemie - International Edition	eng
dc.bibliographicCitation.volume	59	eng
dc.contributor.author	Intorp, S.N.
dc.contributor.author	Hodecker, M.
dc.contributor.author	Müller, M.
dc.contributor.author	Tverskoy, O.
dc.contributor.author	Rosenkranz, M.
dc.contributor.author	Dmitrieva, E.
dc.contributor.author	Popov, A.A.
dc.contributor.author	Rominger, F.
dc.contributor.author	Freudenberg, J.
dc.contributor.author	Dreuw, A.
dc.contributor.author	Bunz, U.H.F.
dc.date.accessioned	2020-07-17T12:25:26Z
dc.date.available	2020-07-17T12:25:26Z
dc.date.issued	2020
dc.description.abstract	Quinoidal azaacenes with almost pure diradical character (y=0.95 to y=0.99) were synthesized. All compounds exhibit paramagnetic behavior investigated by EPR and NMR spectroscopy, and SQUID measurements, revealing thermally populated triplet states with an extremely low-energy gap ΔEST′ of 0.58 to 1.0 kcal mol−1. The species are persistent in solution (half-life≈14–21 h) and in the solid state they are stable for weeks.	eng
dc.description.fonds	Leibniz_Fonds
dc.description.version	publishedVersion	eng
dc.identifier.uri	https://doi.org/10.34657/3556
dc.identifier.uri	https://oa.tib.eu/renate/handle/123456789/4927
dc.language.iso	eng	eng
dc.publisher	Weinheim : Wiley-VCH Verlag	eng
dc.relation.doi	https://doi.org/10.1002/anie.201915977
dc.relation.issn	1433-7851
dc.rights.license	CC BY 4.0 Unported	eng
dc.rights.uri	https://creativecommons.org/licenses/by/4.0/	eng
dc.subject.ddc	540	eng
dc.subject.other	acenes	eng
dc.subject.other	heteroaromatics	eng
dc.subject.other	radicals	eng
dc.subject.other	structure elucidation	eng
dc.subject.other	synthetic methods	eng
dc.subject.other	Nuclear magnetic resonance spectroscopy	eng
dc.subject.other	Diradicals	eng
dc.subject.other	Half lives	eng
dc.subject.other	Paramagnetic behavior	eng
dc.subject.other	SQUID measurements	eng
dc.subject.other	Triplet state	eng
dc.subject.other	Electron spin resonance spectroscopy	eng
dc.title	Quinoidal Azaacenes: 99 % Diradical Character	eng
dc.type	Article	eng
dc.type	Text	eng
tib.accessRights	openAccess	eng
wgl.contributor	IFWD	eng
wgl.subject	Chemie	eng
wgl.type	Zeitschriftenartikel	eng

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