N-(2-hydroxyethyl)-ethylenediamine-based ionic liquids: Synthesis, structural characterization, thermal, dielectric and catalytic properties

Add time:08/16/2019    Source:sciencedirect.com

Three novel acetate and formate ammonium salts of N-(2-hydroxyethyl)-ethylenediamine (Hydeten) were synthesized as room temperature ionic liquids (RTILs) {2-(2-hydroxy ethylamino)-ethanaminium formate (IL1a), 2-amino-N-(2-hydroxyethyl)-ethanaminium formate (IL1b), and 2-(2-hydroxyethylamino)-ethanaminium acetate (IL2)}. Their structures were characterized by using elemental analysis, FT-IR, 1H and 13C NMR techniques. Some thermal properties of these ILs were determined by using TG and DSC techniques. Real dielectric (ε′)-frequency (ω), imaginary dielectric (ε″)-frequency (ω), and conductivity (σAC)-frequency (ω) relationships of IL1a–b, IL2, and doped IL1–2 were investigated. These ILs were also tested as solvent or catalyst in the synthesis of some organic compounds.

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