NMR measurements in solutions of dialkylimidazolium haloaluminates

Conference · Mon Jun 01 00:00:00 EDT 1992

OSTI ID:10159298

Takahashi, S; Saboungi, M L; Klingler, R J; Chen, M J; Rathke, J W

{sup 27}Al and {sup 35}Cl NMR spectra of AlCl{sub 3}-1-ethyl-3-methyl imidazolium chloride (EMIC) melts were measured for initial compositions ranging from 50 to 67 mol % AlCl{sub 3} at various temperatures. It was shown by changing the preaquisition delay time (DE value) that the dominant aluminum species are AlCl{sub 4}{sup {minus}} in the melt formed by mixing 50 mol % with EMIC and Al{sub 2}Cl{sub 7}{sup {minus}} in the 67 mol % AlCl{sub 3} melt. In the equimolar mixture, the chemical shift of {sup 27}Al NMR spectrum is 103.28 ppm and the line width is 22.83Hz. In the 67 mol % AlCl{sub 3} mixture, the chemical shift is 103.41 ppm and the line width is 2624Hz. A third species observed at 97 ppm in the {sup 27}Al spectra for the 55 and 60 mol % AlCl{sub 3} mixtures is identified to be a product of the reaction with residual water. The relaxation rates for each species in the melts were determined.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 10159298
• Report Number(s): ANL/CP-75680; CONF-9205102-3; ON: DE92016777
• Resource Relation: Conference: 8. international symposium on molten salts,St. Louis, MO (United States),17-22 May 1992; Other Information: PBD: Jun 1992
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
MOLTEN SALTS
NMR SPECTRA
ALUMINIUM 27
CHLORINE 35
IMIDAZOLES
ALUMINIUM CHLORIDES
RELAXATION
QUADRUPOLES
665100
400102
NUCLEAR TECHNIQUES IN CONDENSED MATTER PHYSICS
CHEMICAL AND SPECTRAL PROCEDURES