Fluoreno[2,1-a]fluorene: an ortho-naphthoquinodimethane-based system with partial diradical character
| Autor: | José L. Zafra, Mauricio Pavano, Derik K. Frantz, Ashley Ringer McDonald, Hannah Hashimoto, James E. Wood, Kyle M. D’Ambrosio, Verònica Postils, Carlos J. Gómez-García, Juan Casado, Conerd K. Frederickson, Allison S. Hacker, David Casanova |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Fluorene 010402 general chemistry 01 natural sciences Quantum chemistry Catalysis chemistry.chemical_compound symbols.namesake biology.animal Materials Chemistry Molecule Spectroscopy Squid biology 010405 organic chemistry Diradical Metals and Alloys General Chemistry 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Crystallography Character (mathematics) chemistry Ceramics and Composites symbols Raman spectroscopy |
| Zdroj: | Chemical communications (Cambridge, England). 55(94) |
| ISSN: | 1364-548X |
| Popis: | Fluoreno[2,1-a]fluorene, a molecule comprising fused ortho-quinodimethane units in a 1,5-napthoquinodimethane core, has been prepared and investigated with spectroscopy (UV-Vis-NIR, 1H-NMR and Raman), SQUID magnetometry, spectroelectrochemistry and quantum chemistry. While para-quinodimethanes with a 2,6-substitution pattern exist as closed-shell species and meta-quinodimethanes with 2,7-substitution favour a ground electronic state with very large diradical character, our 1,5-substituted ortho-naphthoquinodimethane-based system exhibits an intermediate degree of diradical character. |
| Databáze: | OpenAIRE |
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