Experimental determination of the /sup 27/Al NMR quadrupole coupling constant of the hexaaquoaluminum ion in aqueous perchloric acid and mixed acetone-aqueous perchloric acid solution
The /sup 27/Al NMR line width and the spin-spin relaxation rate of the hexaaquoaluminum ion in aqueous perchloric acid and mixed acetone/aqueous perchloric acid solutions are summarized. The noted increase in the line width of the Al(H/sub 2/O)/sub 6//sup 3+/ resonance with the addition of acetone is interpreted as being due to a decrease in the molecular tumbling rate of the Al(H/sub 2/O)/sub 6//sup 3+/ ion in a more viscous solvent medium. The estimated and calculated values of the quadrupole coupling constant for Al(H/sub 2/O)/sub 6//sup 3+/ have been confirmed by experimental values reported herein. Data in mixed acetone/water solvent mixtures indicate that the integrity of Al(H/sub 2/O)/sub 6//sup 3+/ is preserved and acetone does not compete effectively with H/sub 2/O for coordination sites on the Al/sup 3+/(aq) cation.
- Research Organization:
- Duke Univ., Durham, NC (USA)
- OSTI ID:
- 5762185
- Journal Information:
- Inorg. Chem.; (United States), Vol. 27:17
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALUMINIUM COMPOUNDS
SPIN-SPIN RELAXATION
AQUEOUS SOLUTIONS
CATIONS
ALUMINIUM 27
NMR SPECTRA
ALUMINIUM ISOTOPES
CHARGED PARTICLES
DISPERSIONS
IONS
ISOTOPES
LIGHT NUCLEI
MIXTURES
NUCLEI
ODD-EVEN NUCLEI
RELAXATION
SOLUTIONS
SPECTRA
STABLE ISOTOPES
400201* - Chemical & Physicochemical Properties
400202 - Isotope Effects
Isotope Exchange
& Isotope Separation