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Determination of isotope composition in protic solvents by cobal-59 nuclear magnetic resonance spectrometry

✍ Scribed by S.H. Peterson; R.G. Bryant; J.G. Russell

Publisher: Elsevier Science
Year: 1983
Tongue: English
Weight: 470 KB
Volume: 154
Category: Article
ISSN: 0003-2670
DOI: 10.1016/0003-2670(83)80021-x

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✦ Synopsis

The very large chemical shift range provided by cobalt-59 yields well resolved lines for each of the nmeteen isotopic species in the series of complexes ranging from Co(NH,)i+ to Co(ND,); and each of the thirteen isotopic species m the similar series of tris(ethylenediamine)cobalt(III) complexes. The relative intensity 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 effect and the application to determinations in aqueous and nonaqueous solvents.

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