Solvent-free anhydrous Li+, Na+ and K+ salts of [B(3,5-(CF3)2C6H3)4]−, [BArF4]−. Improved synthesis and solid-state structures

Abstract

We report an alternative, improved, multigram scale (∼20 g, 60–70% yield) preparation of solvent-free anhydrous Li[BAr^F₄], Na[BAr^F₄] and K[BAr^F₄], and the corresponding single-crystal X-ray characterisation of [Li(H₂O)][BAr^F₄], Na[BAr^F₄]˙ and K[BAr^F₄].