Crystal Structure of 1-Butyl-3-methylimidazolium Chloride. A Clue to the Elucidation of the Ionic Liquid Structure
Authors:
- 21 July 2003
- journal article
- Published by Oxford University Press (OUP) in Chemistry Letters
- Vol. 32 (8) , 740-741
Abstract
A single crystal of 1-butyl-3-methylimidazolium chloride [bmim]Cl, a prototype ionic liquid, has successfully been prepared and an X-ray crystallographic analysis has been performed. It reveals the presence of a hydrogen bonding network involving the chloride anion and the ring as well as the n-butyl hydrogen atoms, a strong hydrophobic interaction between the two n-butyl groups of the [bmim] cations, and a unique corrugated sheets structure of the imidazolium rings. Considering the similarity of the Raman spectra of crystalline and liquid states, we suspect that the three dimensional structure determined in the present study also exist, at least partially, in the ionic liquid state.Keywords
This publication has 6 references indexed in Scilit:
- Raman Spectra, Crystal Polymorphism, and Structure of a Prototype Ionic-liquid [bmim]ClChemistry Letters, 2003
- In Situ Formation of Mixed Phosphine−Imidazolylidene Palladium Complexes in Room-Temperature Ionic LiquidsOrganometallics, 2001
- A Cambridge Structural Database analysis of the C–H⋯Cl interaction: C–H⋯Cl− and C–H⋯Cl–M often behave as hydrogen bonds but C–H⋯Cl–C is generally a van der Waals interactionCrystEngComm, 2001
- Room-Temperature Ionic Liquids. Solvents for Synthesis and CatalysisChemical Reviews, 1999
- Manifestations of noncovalent interactions in the solid state. Dimeric and polymeric self-assembly in imidazolium salts via face-to-face cation—cation π-stackingSupramolecular Chemistry, 1993
- Evidence for the presence of hydrogen-bonded ion-ion interactions in the molten salt precursor, 1-methyl-3-ethylimidazolium chlorideJournal of Molecular Structure, 1989