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  Home > JCE Print > Journal of Chemical Education > Issues > 1997  > July  >
Research: Science and Education
Paramagnetic Susceptibility by NMR: The "Solvent Correction" Removed for Large Paramagnetic Molecules
Claude Piguet
Department of Inorganic Chemistry, Sciences II, University of Geneva, 30 quai Ernest Ansermet, Geneva 4, CH-1211, Switzerland
Cover
July 1997
Vol. 74 No. 7
p. 815
Abstract
For large paramagnetic molecules in solution, the paramagnetic and diamagnetic contributions to the magnetic susceptibility are comparable and may be determined by NMR (Evans' method) in the same conditions (concentration, temperature, solvent). Theoretical considerations show that the solvent correction similarly affects both measurements and cancels in the combined equations calculating the magnetic susceptibilities and the magnetic moments. These simplified equations have been successfully applied for the determination of the magnetism of self-assembled heterodinuclear 3d-4f supramolecular complexes in acetonitrile.
More Information
*  Citation
 Piguet, Claude. J. Chem. Educ. 1997 74 815.
*  Keywords
 Physical Chemistry, Teaching/Learning Theory/Practice, Coordination Chemistry, Magnetic Properties, NMR Spectrometry
*  History
 Created:
Last Updated:		 July 28, 1999
June 23, 2005
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