Determination of isotope composition in protic solvents by cobal-59 nuclear magnetic resonance spectrometry |
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| Authors: | S.H. Peterson R.G. Bryant J.G. Russell |
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| Affiliation: | Chemistry Department, University of Minnesota, 207 Pleasant St. S.E., Minneapolis, MN 55455 U.S.A.;Chemistry Department, California State University, 6000 J. Street, Sacramento, CA 95819 U.S.A. |
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| Abstract: | The very large chemical shift range provided by cobalt-59 yields well resolved lines for each of the nineteen isotopic species in the series of complexes ranging from Co(NH3)3+6 to Co(ND3)3+6 and each of the thirteen isotopic species in the similar series of tris(ethylenediamine)cobalt(III) complexes. The relative intensily distribution of these n.m.r. signals at equilibrium is related directly to the proton isotope composition of the solvent. This n.m.r. method of quantifying the isotope composition is examined with respect to the equilibrium isotope and the application to determination in aquerous and non-aqueous solvents. |
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