On-surface synthesis of super-heptazethrene
Creators
- 1. Empa—Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 Dübendorf, Switzerland
- 2. Faculty of Chemistry and Food Chemistry, and Center for Advancing Electronics Dresden, Technical University of Dresden, 01062 Dresden, Germany
- 3. Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
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Description
Zethrenes are model diradicaloids with potential applications in spintronics and optoelectronics. Despite a rich chemistry in solution, on-surface synthesis of zethrenes has never been demonstrated. This record contains data to support our recent publication where we report the on-surface synthesis of super-heptazethrene on Au(111). Scanning tunneling spectroscopy investigations reveal that super-heptazethrene exhibits an exceedingly low HOMO–LUMO gap of 230 meV and, in contrast to its open-shell singlet ground state in the solution phase and in the solid-state, likely adopts a closed-shell ground state on Au(111).
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References
Journal reference S. Mishra, J. Melidonie, K. Eimre, S. Obermann, O. Gröning, C.A. Pignedoli, P. Ruffieux, X. Feng, R. Fasel, Chem. Commun. 56, 7467--7470 (2020)., doi: 10.1039/D0CC02513E