Alkali Metal Salts with Designable Aryltrifluoroborate Anions

Alkali Metal Salts with Designable Aryltrifluoroborate Anions

Aryltrifluoroborate ([ArBF3]−) has a designable basic anion structure. Various [ArBF3]−-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, particul...

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Veröffentlicht in:The journal of physical chemistry. B 2016-09, Vol.120 (35), p.9468-9476
Hauptverfasser: Iwasaki, Kazuki, Yoshii, Kazuki, Tsuzuki, Seiji, Matsumoto, Hajime, Tsuda, Tetsuya, Kuwabata, Susumu
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container_end_page 9476
container_issue 35
container_start_page 9468
container_title The journal of physical chemistry. B
container_volume 120
creator Iwasaki, Kazuki
Yoshii, Kazuki
Tsuzuki, Seiji
Matsumoto, Hajime
Tsuda, Tetsuya
Kuwabata, Susumu
description Aryltrifluoroborate ([ArBF3]−) has a designable basic anion structure. Various [ArBF3]−-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 [ArBF3]− anions and the anions’ larger entropy. Moreover, interestingly, potassium cations were electrochemically reduced in the potassium (meta-ethoxyphenyl)­trifluoroborate (K­[m-OEtC6H4BF3]) molten salt at 433 K. These findings contribute substantially to furthering molten salt chemistry, ionic liquid chemistry, and electrochemistry.
doi_str_mv 10.1021/acs.jpcb.6b06990
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