"Proton spin relaxation and methyl and hydroxy group motion" by Peter A. Beckmann
 

Document Type

Article

Version

Author's Final Manuscript

Publication Title

Journal of Magnetic Resonance

Volume

36

Publication Date

1979

Abstract

Proton spin-lattice relaxation rates R = T1−1 have been measured in powdered samples of 4-methyl-2,6-di-tertiarybutyl phenol between 77 and 170 K. Deuteration of the hydroxy proton leads to a large change in R in the vicinity of the 120-K R maximum and in the high-temperature region. The data are successfully, although probably not uniquely, fitted and the interpretation suggests that in addition to the motion of the hydroxy proton playing a significant role in the relaxation, the two pairs of t-butyl methyl groups also contributing are inequivalent. The departure, at low temperatures, from an ω−2dependence of R where ω is the nuclear Larmor angular frequency is also investigated.

DOI

https://doi.org/10.1016/0022-2364(79)90094-5

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