Binuclear shift reagents for nuclear magnetic resonance spectrometry of aromatic and polycyclic aromatic compounds
The effects of adding binuclear lanthanide(III)-silver(I) shift reagents to aromatic compounds and phosphines are discussed. With aromatic compounds, the silver bonds at sites away from alkyl substituents so that selective shifts, leading to significant spectral clarification, are observed. Because of different shifts, the analysis of complex mixtures such as the methylbenzenes in gasoline can be performed in the presence of these shift reagents. A study of the relative shifting ability of the binuclear complexes formed with the ligand 6,6,7,7,8,8,8-heptafluoro-2,2-dimethyl-3,5-octanedione (fod), vs. 2,2,6,6-tetramethyl-3,5-heptanedione (thd), revealed that the fluorinated ligands are much more effective shift reagents.
- Research Organization:
- Univ. of Colorado, Boulder
- OSTI ID:
- 5112444
- Journal Information:
- Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 55:9; ISSN ANCHA
- Country of Publication:
- United States
- Language:
- English
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AROMATICS
CHEMICAL REACTIONS
DATA
EXPERIMENTAL DATA
FLUORINATED ALICYCLIC HYDROCARBONS
HALOGENATED ALICYCLIC HYDROCARBONS
HYDROCARBONS
INFORMATION
MAGNETIC RESONANCE
NMR SPECTRA
NUCLEAR MAGNETIC RESONANCE
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PHOSPHINES
PHOSPHORUS COMPOUNDS
POLYCYCLIC AROMATIC HYDROCARBONS
RARE EARTH COMPOUNDS
RESONANCE
SILVER COMPOUNDS
SPECTRA
TRANSITION ELEMENT COMPOUNDS