Abstract
Proton spin-lattice relaxation time measurements in the rotating frame as a function of inverse temperature have revealed shallow minima not previously observed for a series of n-alkanes ranging from n-C22H46 to n-C41H84.The most likely reorientational model is one in which a thermally activated trans-gauche defect motion modulates the internuclear dipolar interactions. The results suggest that the gauche defect equilibrium orientation has a higher energy than that of the ordered all-trans equilibrium orientation. Activation energies for the motion as well as energy differences between the two orientations have been extracted from the results for these n-alkanes.
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© 1990 Springer-Verlag Berlin Heidelberg
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Reynhardt, E.C., Basson, I. (1990). Identification of a Defect Chain Motion in n-Alkanes by Means of NMR Spin-Lattice Relaxation Time Measurements. In: Mehring, M., von Schütz, J.U., Wolf, H.C. (eds) 25th Congress Ampere on Magnetic Resonance and Related Phenomena. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-76072-3_166
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DOI: https://doi.org/10.1007/978-3-642-76072-3_166
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