Studies of chemical exchange by nuclear magnetic relaxation in the rotating frame
- 1 April 1970
- journal article
- research article
- Published by Taylor & Francis in Molecular Physics
- Vol. 18 (4) , 553-559
- https://doi.org/10.1080/00268977000100611
Abstract
The exchange of protons between sites with different chemical shift is studied by means of N.M.R. relaxation time measurements (T 1ρ ) in the presence of an r.f. magnetic field. The system studied is chair-to-chair isomerization in cyclohexane. The exchange rate and chemical shift are measured in the temperature range 215°k to 250°k. The method is compared with other N.M.R. techniques for studying chemical exchange and is found to have advantages particularly at high exchange rates.Keywords
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