Abstract
Neutron diffraction has been used to determine the liquid structure of 1,3-dimethylimidazolium bis{( trifluoromethyl) sulfonyl} amide ([dmim][NTf2]). Significantly smaller charge ordering is found in this liquid compared with analogous chloride and hexafluorophosphate salts due to the diffuse charge density and size of the [NTf2](-) anion. This is manifested in a much larger cation-cation and cation-anion separation and an overlap of the cation-cation and cation-anion shells. Comparison of the liquid structure with the crystal structure reported by Holbrey et al. ( Dalton Trans. 2004, 2267) indicates little correlation, for example, the [NTf2](-) anion adopts a trans orientation predominantly in the liquid whereas a cis orientation is found in the solid phase.
Original language | English |
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Pages (from-to) | 12055-12061 |
Number of pages | 7 |
Journal | Journal of Physical Chemistry B |
Volume | 110 (24) |
Issue number | 24 |
DOIs | |
Publication status | Published - 22 Jun 2006 |
ASJC Scopus subject areas
- Physical and Theoretical Chemistry