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A Stable Triplet-Ground-State Conjugated Diradical Based on a Diindenopyrazine Skeleton.
- Source :
-
Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2021 Feb 23; Vol. 60 (9), pp. 4594-4598. Date of Electronic Publication: 2021 Jan 18. - Publication Year :
- 2021
-
Abstract
- High-spin conjugated radicals have great potential in magnetic materials and organic spintronics. However, to obtain high-spin conjugated radicals is still quite challenging due to their poor stability. We report the successful synthesis and isolation of a stable triplet conjugated diradical, 10,12-diaryldiindeno[1,2-b:2',1'-e]pyrazine (m-DIP). With the m-xylylene analogue skeleton containing electron-deficient sp <superscript>2</superscript> -nitrogen atoms, m-DIP displays significant aromatic character within its pyrazine ring and its spin density mainly delocalizes on the meta-pyrazine unit, making it a triplet ground state conjugated diradical. Our work provides an effective "spin density tuning" strategy for stable high-spin conjugated radicals.<br /> (© 2020 Wiley-VCH GmbH.)
Details
- Language :
- English
- ISSN :
- 1521-3773
- Volume :
- 60
- Issue :
- 9
- Database :
- MEDLINE
- Journal :
- Angewandte Chemie (International ed. in English)
- Publication Type :
- Academic Journal
- Accession number :
- 33241615
- Full Text :
- https://doi.org/10.1002/anie.202012989