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Title: A Hydronium Solvate Ionic Liquid: Facile Synthesis of Air-Stable Ionic Liquid with Strong Bronsted Acidity
Authors: Kitada, Atsushi  kyouindb  KAKEN_id  orcid (unconfirmed)
Takeoka, Shun
Kintsu, Kohei
Fukami, Kazuhiro  kyouindb  KAKEN_id  orcid (unconfirmed)
Saimura, Masayuki
Nagata, Takashi  kyouindb  KAKEN_id  orcid (unconfirmed)
Katahira, Masato  kyouindb  KAKEN_id  orcid (unconfirmed)
Murase, Kuniaki  kyouindb  KAKEN_id  orcid (unconfirmed)
Author's alias: 北田, 敦
竹岡, 駿
近都, 康平
深見, 一弘
永田, 崇
片平, 正人
邑瀬, 邦明
Keywords: acidity
solvate ionic liquid
Issue Date: 22-Feb-2018
Publisher: The Electrochemical Society
Journal title: Journal of the Electrochemical Society
Volume: 165
Issue: 3
Start page: H121
End page: H127
Abstract: A new kind of ionic liquid (IL) with strong Brønsted acidity, i.e., a hydronium (H₃O⁺) solvate ionic liquid, is reported. The IL can be described as [H₃O⁺·18C6]Tf₂N, where water exists as the H₃O⁺ ion solvated by 18-crown-6-ether (18C6), of which the counter anion is bis(trifluoromethylsulfonyl)amide (Tf₂N⁻; Tf = CF₃SO₂). The hydrophobic Tf₂N⁻ anion makes [H₃O⁺·18C6]Tf₂N, evaluated using the indicator method, is a new record for ILs and indicates strong aciditiy. The findings regarding this proton-condensed solvate IL are of fundamental interest, and will help in the design of media for new acid-base reactions.
Description: This was Paper 3475 presented at the Honolulu, Hawaii, Meeting of the Society, October 2–7, 2016.
Rights: © The Author(s) 2018. Published by ECS. This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (CC BY,, which permits unrestricted reuse of the work in any medium, provided the original work is properly cited.
DOI(Published Version): 10.1149/2.0481803jes
Appears in Collections:Journal Articles

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