Journal
DALTON TRANSACTIONS
Volume 51, Issue 12, Pages 4843-4852Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2dt00024e
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Funding
- Royal Society
- Leverhulme Trust [LT170022, RPG-2019-242]
- NTU
- EPSRC
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This study reports the first examples of radical-cation salts of BEDT-TTF with spiroborate anions [B(mandelate)(2)](-) and [B(2-chloromandelate)(2)](-), synthesized from enantiopure or racemic bidentate mandelate or chloromandelate ligands. In the salts prepared using enantiopure ligands, only one diastereoisomer of the spiroborate anion is incorporated with the same stereochemistry as the ligand. For the racemic salts, one racemic pair of spiroborate anions containing an R and an S mandelate ligand is incorporated. Helical crystals were obtained when using spiroborate anions with enantiopure ligands in certain solvents. Electric and magnetic properties, as well as band structure calculations, are reported.
We report the first examples of radical-cation salts of BEDT-TTF with spiroborate anions [B(mandelate)(2)](-) and [B(2-chloromandelate)(2)](-), synthesized from either enantiopure or racemic bidentate mandelate or chloromandelate ligands. In the salts prepared using enantiopure ligands only one of two diastereoisomers of the spiroborate anion is incorporated, with the boron centre having the same stereochemistry as the enantiopure ligand. For the racemic salts one racemic pair of spiroborate anions containing an R and an S mandelate ligand is incorporated. In certain solvents helical crystals were obtained when using spiroborate anions with enantiopure ligands. Electrical and magnetic properties, and band structure calculations are reported.
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