Protic Ionic Liquids Can Be Both Free Proton Conductors and Benign Superacids was written by Ansari, Younes;Ueno, Kazuhide;Angell, C. Austen. And the article was included in Journal of Physical Chemistry B in 2021.Name: 2,3,4,5,6-Perfluoropyridine The following contents are mentioned in the article:
Superacids have been the source of much spectacular chem. but very little interesting physics despite the fact that the states of cations formed by transfer of the superacid proton to mol. bases can approach that of the cations in free space. Indeed, some of the very strongest acids, such as HPF6 and HAlCl4, have no independent existence due to lack of screening of the bare proton self-energy: their acidities can only be assessed by study of the conjugate bases. Here we show that, by allowing the protons of transient HAlCl4 and HAlBr4 to relocate on pentafluoropyridine, PFP (a very weak base that is stable to superacids), we can create glass forming protic ionic liquids (PILs) that are themselves superacids but, being free of superacid vapors, are of benign character. At Tg, conductivities exceed “good” ionic liquid values by 9 decades, so must be superprotonic. Anomalous Walden plots confirm superprotonicity. This study involved multiple reactions and reactants, such as 2,3,4,5,6-Perfluoropyridine (cas: 700-16-3Name: 2,3,4,5,6-Perfluoropyridine).
2,3,4,5,6-Perfluoropyridine (cas: 700-16-3) belongs to pyridine derivatives. The ring atoms in the pyridine molecule are sp2-hybridized. The nitrogen is involved in the 蟺-bonding aromatic system using its unhybridized p orbital. The lone pair is in an sp2 orbital, projecting outward from the ring in the same plane as the 蟽 bonds. Many analogues of pyridine are known where N is replaced by other heteroatoms . Substitution of one C鈥揌 in pyridine with a second N gives rise to the diazine heterocycles (C4H4N2), with the names pyridazine, pyrimidine, and pyrazine.Name: 2,3,4,5,6-Perfluoropyridine