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Molecular dynamics in solid anhydrous β-estradiol studied by 1H NMR

✍ Scribed by E.R. Andrew; M. Kempka; J.M. Radomski; E. Szczesniak

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
101 KB
Volume
14
Category
Article
ISSN
0926-2040

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✦ Synopsis

Proton second moment and spin-lattice relaxation times T and T in solid anhydrous b-estradiol are measured as a 1 1 r function of temperature. The results show that the C reorientation of the single methyl group provides the mechanism 3 dominating relaxation at low temperatures and reveal the existence of a conformational motion of the carbon skeleton dominating relaxation at high temperatures. The activation energies of the respective motions are found to be 9.3 and 37.3 kJrmol.

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