4-(Dimethylamino)pyridinium chlorosulfonate: A new ionic liquid exhibiting chlorosulfonic acid action as monoprotic Brönsted acid and no sulfonating reagent

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dc.contributor.authorTitinchi, Salam
dc.date.accessioned2022-09-12T09:34:18Z
dc.date.available2022-09-12T09:34:18Z
dc.date.issued2021
dc.description.abstractMany papers considered chlorosulfonic acid as a sulfonating and sulfating agent, whereas our previous work and a few reports showed it acts as a monoprotic Brönsted acid. Therefore, in the present work, we decided to respond to this question by investigating the reaction between chlorosulfonic acid and DMAP. First, a new ionic liquid viz. 4-dimethylaminopyridinium chlorosulfonate was obtained, which its chemical structure was elucidated using different spectroscopic techniques. Another derivative, 4-dimethylaminopyridinium hydrogen sulfate, was also synthesized, which showed a similar NMR pattern. The NMR spectra analyses of reactants, the new ionic liquid, and 4 dimethylaminopyridinium hydrogen sulfate support the formation of 4-dimethylaminopyridinium chlorosulfonate. Therefore, the formation of N-sulfonic acid-4-dimethylaminopyridinium chloride or 4-dimethylaminopyridinium sulfate and the presence of an excess of chlorosulfonic acid and sulfuric acid were ruled out based on the spectroscopic results. Finally, the new ionic liquid's thermal behavior and thermal stability were investigated, and a possible mechanism was presented for its degradation based on a TGA/DTA analysis.en_US
dc.identifier.citationZaharani, L. et al., 2022. 4-(dimethylamino)Pyridinium chlorosulfonate: A new ionic liquid exhibiting chlorosulfonic acid action as monoprotic Brönsted acid and no sulfonating reagent. Journal of Molecular Liquids, 345, p.118261.en_US
dc.identifier.uridoi.org/10.1016/j.molliq.2021.118261
dc.identifier.urihttp://hdl.handle.net/10566/7854
dc.language.isoenen_US
dc.publisherJournal of Molecular Liquidsen_US
dc.subjectIonic liquiden_US
dc.subjectstructure elucidationen_US
dc.subjectorganic chlorosulfonate salten_US
dc.subjectspectroscopy techniqueen_US
dc.subjectraman spectroscopyen_US
dc.title4-(Dimethylamino)pyridinium chlorosulfonate: A new ionic liquid exhibiting chlorosulfonic acid action as monoprotic Brönsted acid and no sulfonating reagenten_US
dc.typeArticleen_US

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