𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Raman and ab initio study of the conformational isomerism in the 1-ethyl-3-methyl-imidazolium bis(trifluoromethanesulfonyl)imide ionic liquid

✍ Scribed by J. C. Lassègues; J. Grondin; R. Holomb; P. Johansson

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
339 KB
Volume
38
Category
Article
ISSN
0377-0486

No coin nor oath required. For personal study only.

✦ Synopsis

The calculated and experimental Raman spectra of the (EMI + )TFSI -ionic liquid, where EMI + is the 1-ethyl-3-methylimidazolium cation and TFSI -the bis(trifluoromethanesulfonyl)imide anion, have been investigated for a better understanding of the EMI + and TFSI -conformational isomerism as a function of temperature. Characteristic Raman lines of the planar (p) and non-planar (np) EMI + conformers are identified using the reference (EMI + )Br -salt. The anion conformer of C 2 symmetry is confirmed to be more stable than the cis (C 1 ) one by 4.5 ± 0.2 kJ mol -1 . At room temperature, the population of trans (C 2 ) anions and np cations is 75 ± 2% and 87 ± 4%, respectively. Fast cooling quenches a metastable glassy phase composed of mainly C 2 anion conformers and p cation conformers, whereas slow cooling gives a crystalline phase composed of C 1 anion conformers and of np cation conformers.

📜 SIMILAR VOLUMES

Elucidation of the Electrochemical Oxida
Elucidation of the Electrochemical Oxidation Pathway of Ammonia in Dimethylformamide and the Room Temperature Ionic Liquid, 1-Ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide
✍ Marisa C. Buzzeo; Debora Giovanelli; Nathan S. Lawrence; Christopher Hardacre; K 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 216 KB 👁 1 views

## Abstract The direct electrochemical oxidation of ammonia has been examined in both the organic solvent dimethylformamide (DMF) and the room temperature ionic liquid 1‐ethyl‐3‐methylimidazolium bis(trifluoromethylsulfonyl)imide [EMIM][N(Tf)~2~]. The corresponding voltammetric responses have been

Reactivity Towards Europium(III) of the
Reactivity Towards Europium(III) of the Radiolysis Products of the Ionic Liquid 1-Methyl-3-butyl-1H-imidazolium Bis[(trifluoromethyl)sulfonyl]amide (C4-mimTf2N) and Effect of Water: A TRLFS (Time-Resolved Laser-Induced Fluorescence Spectroscopy) Preliminary Study
✍ Isabelle Billard; Sylvia Georg 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 German ⚖ 277 KB

## Abstract The effect of laser irradiation at __λ__~exc~ 266 nm onto the fluorescence characteristics of Eu^III^ in solution of the ionic liquid 1‐methyl‐3‐butyl‐1__H__‐imidazolium bis[(trifluoromethyl)sulfonyl]amide (C~4~‐mimTf~2~N) was examined for various amounts of H~2~O added. Stable radiolyt