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Nanoclusters in Ionic Liquids: Evidence for N-Heterocyclic Carbene Formation from Imidazolium-Based Ionic Liquids Detected by 2H NMR
Abstract
The mystery of how 1,3-substituted imidazolium-based ionic liquids (ILs) can provide high stabilization for transition-metal(0) nanoclusters, that is, in the absence of the usual strongly coordinating anions, has been probed. 2H NMR product and kinetic studies of 1,3-substituted imidazolium ILs under D2 reveal that nanocluster-catalyzed H/D exchange occurs at the 2- (as well as at the 4-, 5-, and 8-) C-H positions of the imidazolium cation. The results (i) provide compelling evidence that N-heterocyclic carbene formation and ligation of nanoclusters is occurring in ILs; and (ii) argue that N-heterocyclic carbenes merit further investigation as heretofore unappreciated stabilizers of transition-metal nanoclusters.
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Citations
Cited by
Pârvulescu, V. I., & Hardacre, C. (2007) · Chemical Reviews · doi:10.1021/cr050948h · Cited by 2,377
Ionic liquids and catalysis: Recent progress from knowledge to applications
Olivier-Bourbigou, H., Magna, L., & Morvan, D. (2010) · Applied Catalysis A: General · doi:10.1016/j.apcata.2009.10.008 · Cited by 1,639
Zhang, S., Zhang, J., Zhang, Y., & Deng, Y. (2017) · Chemical Reviews · doi:10.1021/acs.chemrev.6b00509 · Cited by 659
Physico-chemical processes in imidazolium ionic liquids
Dupont, J., & Suarez, P. A. Z. (2006) · Physical Chemistry Chemical Physics · doi:10.1039/b602046a · Cited by 417
Imidazole- and imidazolium-containing polymers for biology and material science applications
Anderson, E. B., & Long, T. E. (2010) · Polymer · doi:10.1016/j.polymer.2010.02.006 · Cited by 407
Metadata
- Authors
- Ott, L. S., Cline, M. L., Deetlefs, M., Seddon, K. R., & Finke, R. G.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2005-04-01
- Volume
- 127
- Issue
- 16
- Pages
- 5758-5759
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2075626300
- Cited by
- 278
- References
- 0
- FWCI
- 9.39
- Type
- journal article
- Language
- en
- Open access
- closed
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- Ott, L. S., Cline, M. L., Deetlefs, M., Seddon, K. R., & Finke, R. G. (2005). Nanoclusters in Ionic Liquids: Evidence for N-Heterocyclic Carbene Formation from Imidazolium-Based Ionic Liquids Detected by 2H NMR. Journal of the American Chemical Society. https://doi.org/10.1021/ja0423320
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