Record Display for the EPA National Library Catalog

RECORD NUMBER: 29 OF 29

OLS Field Name OLS Field Data
Main Title Yttrium-89 NMR: A Possible Spin Relaxation Probe for Studying Metal Ion Interactions with Organic Ligands.
Author Levy, George C. ; Rinaldi, Peter L. ; Bailey, J. Terry ;
CORP Author Florida State Univ., Tallahassee. Dept. of Chemistry.;Health Effects Research Lab., Research Triangle Park, NC.
Year Published 1979
Report Number EPA-R-804916; EPA-600/J-80-376;
Stock Number PB82-154873
Additional Subjects Nuclear magnetic resonance ; Spin lattice relaxation ; Ions ; Ligands ; Dipoles ; Metals ; Reprints ; Yttrium 89 ; Ion molecule interactions ; Chemical shifts(Nuclear magnetic resonance)
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB82-154873 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 9p
Abstract
The spin-lattice relaxation mechanisms for aqueous and dimethyl sulfoxide solutions of Y(NO3)3 have been found to be mainly spin-rotation and dipolar relaxation with solvent protons, unlike most heavy spin=1/2 metal ions which are relaxed mainly by spin-rotation and chemical shift anisotropy. The theoretical maximum (89)Y((1)H) NOEF value of -10.2 was observed when tau (c) for the ion was lengthened by lowering the temperature of the aqueous salt solution to 5C, or when yttrium was complexed to an organic ligand. Since (89)Y has a sensitivity of 0.67 relative to that of (13)C, the relative importance of dipolar relaxation and the large theoretical maximum NOEF make (89)Y a possible value NOE structure probe. Such studies can complement relaxation and shift data obtained from other diamagnetic and paramagnetic lanthanid ions.