Influence of inner-sphere processes on the paramagnetic shifts in the {sup 1}H NMR spectra of some mixed-ligand complexes of rare-earth elements
Journal Article
·
· Russian Journal of General Chemistry
OSTI ID:457724
Concentration dependences of the observed chemical shifts in the NMR spectra of 1:1:1 and 1:2:1 mixed-ligand complexes of rare-earth elements with acetylacetone and acrylic, methacrylic, maleic, and fumaric acids were analyzed. The complexes undergo inner-sphere structural transformations involving different modes of coordination of the unsaturated acid, which is capable of coordination to the central ion through both the carboxylic group and {pi} electrons of the double bond. The possibility of determining equilibrium constants and limiting chemical shifts of the isomeric forms of the complexes was demonstrated. 9 refs., 4 figs.
- OSTI ID:
- 457724
- Journal Information:
- Russian Journal of General Chemistry, Vol. 65, Issue 7; Other Information: PBD: 20 Dec 1995; TN: Translated from Zhurnal Obshchei Khimii; 65: No. 7, 1088-1091(Jul 1995)
- Country of Publication:
- United States
- Language:
- English
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Tue May 17 00:00:00 EDT 1988
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OSTI ID:457724
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