title: Boric ester-type molten salt via dehydrocoupling reaction.
abstract: Novel boric ester-type molten salt was prepared using 1-(2-hydroxyethyl)-3-methylimidazolium chloride as a key starting material. After an ion exchange reaction of 1-(2-hydroxyethyl)-3-methylimidazolium chloride with lithium (bis-(trifluoromethanesulfonyl) imide) (LiNTf2), the resulting 1-(2-hydroxyethyl)-3-methylimidazolium NTf2 was reacted with 9-borabicyclo[3.3.1]nonane (9-BBN) to give the desired boric ester-type molten salt in a moderate yield. The structure of the boric ester-type molten salt was supported by 1H-, 13C-, 11B- and 19F-NMR spectra. In the presence of two different kinds of lithium salts, the matrices showed an ionic conductivity in the range of 1.1 × 10⁻⁴-1.6 × 10⁻⁵ S cm⁻¹ at 51 °C. This was higher than other organoboron molten salts ever reported.
authors.affiliation: School of Materials Science, Japan Advanced Institute of Science and Technology (JAIST), 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan. matsumi@jaist.ac.jp.
authors.forename: Noriyoshi
authors.initials: N
authors.lastname: Matsumi
authors.affiliation: School of Materials Science, Japan Advanced Institute of Science and Technology (JAIST), 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan. brothertobrother@gmail.com.
authors.forename: Yoshiyuki
authors.initials: Y
authors.lastname: Toyota
authors.affiliation: School of Materials Science, Japan Advanced Institute of Science and Technology (JAIST), 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan. joshi.prerna2011@gmail.com.
authors.forename: Prerna
authors.initials: P
authors.lastname: Joshi
authors.affiliation: School of Materials Science, Japan Advanced Institute of Science and Technology (JAIST), 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan. rupakagain2008@gmail.com.
authors.forename: Puhup
authors.initials: P
authors.lastname: Puneet
authors.affiliation: School of Materials Science, Japan Advanced Institute of Science and Technology (JAIST), 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan. raman@jaist.ac.jp.
authors.forename: Raman
authors.initials: R
authors.lastname: Vedarajan
authors.affiliation: Advanced Materials Laboratory, Nissan Motor Co., Ltd., 1 Natsushima-cho, Yokosuka-shi, Kanagawa 237-8523, Japan. t-takekawa@mail.nissan.co.jp.
authors.forename: Toshihiro
authors.initials: T
authors.lastname: Takekawa
mesh_terms: D001896:Boron Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D004952:Esters / Q000138:chemical synthesis / Q000737:chemistry; D007477:Ions / Q000737:chemistry; D008094:Lithium / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D012492:Salts / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: D001896:Boron Compounds; D004952:Esters; D007477:Ions; D012492:Salts; D008094:Lithium