A Lead(II) Substituted Triplet Carbene
Reaction of the pincer-type ligand L<sub>3</sub> supported complex [L<sub>3</sub>PbBr][BArF<sub>24</sub>] (<b>1</b>) with Li[(C(═N<sub>2</sub>)TMS)] furnishes [L<sub>3</sub>Pb(C(═N<sub>2</sub>)TMS)][BArF<sub>24</sub>] (<b>2</b>). Diazo-compound <b>2</b> eliminates dinitrogen upon irradiation affording formal plumba-alkyne <b>3</b>, which persists in cold fluoroarene solutions. Variable temperature UV/Vis and NMR spectroscopies in combination with quantum-chemical calculations identify <b>3</b> as a metal-substituted triplet carbene. In-crystallo irradiation of [L<sub>3</sub>Pb(C(═N<sub>2</sub>)TMS)(tol)][BArF<sub>24</sub>] (<b>2</b>·tol) provides a snapshot of intermolecular C-H bond insertion with toluene (<b>4</b>).
Authors
- Bernd Morgenstern (ORCID: https://orcid.org/0000-0002-8360-4218)
- Abinash Swain (ORCID: https://orcid.org/0000-0001-7684-3379)
- Dominik Munz (ORCID: https://orcid.org/0000-0003-3412-651X)
- Julian Messelberger
- Ugo Authesserre (ORCID: https://orcid.org/0000-0003-0097-6559)
- Fabian Dankert (ORCID: https://orcid.org/0000-0002-6806-4794)
- David Scheschkewitz (ORCID: https://orcid.org/0000-0001-5600-8034)
Institutions
- Saarland University (DE)
Publication Details
- Journal
- Journal of the American Chemical Society
- Published
- 2024-10-18
- DOI
- https://doi.org/10.1021/jacs.4c10205
- Citations
- 17
- Primary Topic
- N-Heterocyclic Carbenes in Organic and Inorganic Chemistry
- Type
- article
- Field-Weighted Citation Impact
- 4.25
Funders
- European Commission
- Deutsche Forschungsgemeinschaft
- Civil Aviation Administration of China
- European Research Council