1 research outputs found
Alkali Metal Salts with Designable Aryltrifluoroborate Anions
Aryltrifluoroborate
([ArBF<sub>3</sub>]<sup>−</sup>) has
a designable basic anion structure. Various [ArBF<sub>3</sub>]<sup>−</sup>-based anions were synthesized to create novel alkali
metal salts using a simple and safe process. Nearly 40 novel alkali
metal salts were successfully obtained, and their physicochemical
characteristics, particularly their thermal properties, were elucidated.
These salts have lower melting points than those of simple inorganic
alkali halide salts, such as KCl and LiCl, because of the weaker interactions
between the alkali metal cations and the [ArBF<sub>3</sub>]<sup>−</sup> anions and the anions’ larger entropy. Moreover, interestingly,
potassium cations were electrochemically reduced in the potassium
(<i>meta</i>-ethoxyphenyl)Âtrifluoroborate (KÂ[<i>m</i>-OEtC<sub>6</sub>H<sub>4</sub>BF<sub>3</sub>]) molten salt at 433
K. These findings contribute substantially to furthering molten salt
chemistry, ionic liquid chemistry, and electrochemistry