1-Butyl-3-methylimidazolium hexafluorophosphate
| 1-Butyl-3-methylimidazolium hexafluorophosphate | |
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1-butyl-3-methylimidazol-3-ium hexafluorophosphate |
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Other names
BMIM-PF6 |
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| Identifiers | |
| CAS number | 174501-64-5 |
| PubChem | 2734174 |
| ChemSpider | 2015930  |
| Jmol-3D images | Image 1 Image 2 |
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| Properties | |
| Molecular formula | C8H15F6N2P |
| Molar mass | 284.18 g mol−1 |
| Appearance | Light yellow liquid |
| Density | 1.38 g/mL (20 °C) |
 (verify) (what is:  / ?)Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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| Infobox references | |
1-Butyl-3-methylimidazolium hexafluorophosphate, also known as BMIM-PF6, is a viscous, colourless, hydrophobic and non-water soluble ionic liquid. Together with 1-butyl-3-methylimidazolium tetrafluoroborate, BMIM-BF4, it is one of the most widely studied ionic liquids. It is known to very slowly decompose in the presence of water.[1]
Preparation
BMIM-PF6 is commercially available. It may be obtained in two steps: BMIM-Cl is synthesized by alkylating 1-methylimidazole with 1-chlorobutane. A metathesis reaction with potassium hexafluorophosphate gives the desired compound; the tetrafluoroborate may be prepared by analogously using potassium tetrafluoroborate.[2]
References
- ^ R.P. Swatloski, J.D. Holbrey and R.D. Rogers (2003). "Ionic liquids are not always green: hydrolysis of 1-butyl-3-methylimidazolium hexafluorophosphate". Green Chem. 5 (4): 361–363. doi:10.1039/b304400a.
- ^ Dupont, J., Consorti, C., Suarez, P., de Souza, R. (2004), "Preparation of 1-Butyl-3-methyl imidazolium-based Room Temperature Ionic Liquids", Org. Synth.; Coll. Vol. 10: 184
Further reading
- S. Carda-Broch, A. Berthod, D.W. Armstrong, (2003). "Solvent properties of the 1-butyl-3-methylimidazolium hexafluorophosphate ionic liquid". Analytical and Bioanalytical Chemistry 375 (2): 191–199. doi:10.1007/s00216-002-1684-1. PMID 12560962.
