Symmetry vs. asymmetry – Enthalpic differences in imidazolium-based ionic liquids was written by Yermalayeu, Andrei V.;Varfolomeev, Mikhail A.;Verevkin, Sergey P.. And the article was included in Journal of Molecular Liquids in 2020.HPLC of Formula: 21252-69-7 This article mentions the following:
Enthalpies of ionic liquids [CnCnIm][X] synthesis reactions were measured with help of differential scanning calorimetry. These results in combination with quantum-chem. calculations were used for estimation of vaporization enthalpies of sym. imidazolium based ionic liquids with X = Cl, Br, and I. Vaporization enthalpies of the sym. ([CnCnIm][X]) series were found to be systematically lower (of 5-8 kJ mol-1) in comparison with the corresponding asym. imidazolium-based ILs ([CnC1Im][X]). This energetic difference was attributed to the intensity of dispersion interactions. In the experiment, the researchers used many compounds, for example, 1-Octyl-1H-imidazole (cas: 21252-69-7HPLC of Formula: 21252-69-7).
1-Octyl-1H-imidazole (cas: 21252-69-7) belongs to imidazole derivatives. Imidazole is a heterocyclic compound with a five-membered planar ring. It is amphoteric and highly polar. Many drugs contain an imidazole ring, such as certain antifungal drugs, the nitroimidazole series of antibiotics, and the sedative midazolam.HPLC of Formula: 21252-69-7
Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem