Synergic combinations of alkali-metal hydrocarbyl/amide reagents were used to synthesise saturated N-heterocyclic carbene (NHC) ligands tethered to a fluorenide anion through deprotonation of a spirocyclic precursor, whereas conventional bases were not successful. The Li2 derivatives displayed a bridging amide between two Li atoms within the fluorenide-NHC pocket, whereas the Na2 and K2 analogues displayed extended solid-state structures with the fluorenide-NHC ligand chelating one alkali metal centre.
- alkali metals
- bimetallic base
- carbene ligands
ASJC Scopus subject areas
- Organic Chemistry
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NMR data supporting the publication: Synergic deprotonation generates alkali‐metal salts of tethered fluorenide‐NHC ligands co‐complexed to alkali‐metal amides
Mansell, S. M. (Creator) & Evans, K. (Creator), Heriot-Watt University, 6 Feb 2019