A New Class of Neutral Boron-Based Diradicals Spanned by a Two-Carbon-Atom Bridge.
boron
cyclic (alkyl)(amino)carbenes
diboration
diradicals
reduction
Journal
Angewandte Chemie (International ed. in English)
ISSN: 1521-3773
Titre abrégé: Angew Chem Int Ed Engl
Pays: Germany
ID NLM: 0370543
Informations de publication
Date de publication:
04 Feb 2019
04 Feb 2019
Historique:
received:
22
11
2018
pubmed:
15
12
2018
medline:
15
12
2018
entrez:
15
12
2018
Statut:
ppublish
Résumé
A new structural class of boron-based diradicals is prepared by Lewis base addition to and reduction of singly cyclic (alkyl)(amino)carbene (CAAC) stabilised diborylalkenes. The diradicals feature a perpendicular olefinic bridge preventing delocalization between the B(CAAC) π systems, making the coupling between the spin centres very weak. DFT calculations indicate that the compounds are ground-state (open-shell) singlets, with triplet states negligibly higher in energy, thus making the triplet states easily populated thermally.
Identifiants
pubmed: 30549204
doi: 10.1002/anie.201813335
doi:
Types de publication
Journal Article
Langues
eng
Pagination
1842-1846Subventions
Organisme : Deutsche Forschungsgemeinschaft
ID : GRK 2112
Informations de copyright
© 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.