Structure and dynamics of intramolecular hydrogen bonds in carboxylic acid dimers: A solid state NMR study

Article abstract of DOI:10.1063/1.443045

Direct evidence for dynamic intramolecular double proton exchange in carboxylic acid dimers in the solid is obtained from NMR measurements.For the p-toluic acid dimer, an asymmetric double minimum potential with an energy difference ΔG=1.0 kJ/mol and an activation energy of E_a=4.8 kJ/mol between the two tautomeric forms is found.The equilibrium position of the carboxylic proton pair at low temperature is derived from the corresponding dipolar coupling tensor.The importance of double proton tunneling at low temperature is discussed.

Full text of DOI:10.1063/1.443045

Structure and dynamics of intramolecular hydrogen bonds in carboxylic acid dimers: A
solid state NMR study
B. H. Meier, F. Graf, and R. R. Ernst
Citation: The Journal of Chemical Physics 76, 767 (1982); doi: 10.1063/1.443045
View online: http://dx.doi.org/10.1063/1.443045
View Table of Contents: http://scitation.aip.org/content/aip/journal/jcp/76/2?ver=pdfcov
Published by the AIP Publishing
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This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
155.97.178.73 On: Mon, 29 Sep 2014 07:31:41

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
155.97.178.73 On: Mon, 29 Sep 2014 07:31:41

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
155.97.178.73 On: Mon, 29 Sep 2014 07:31:41

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
155.97.178.73 On: Mon, 29 Sep 2014 07:31:41

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
155.97.178.73 On: Mon, 29 Sep 2014 07:31:41

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
155.97.178.73 On: Mon, 29 Sep 2014 07:31:41

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
155.97.178.73 On: Mon, 29 Sep 2014 07:31:41