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Molecular motion in solid pyrene

✍ Scribed by C.A. Fyfe; D.F.R. Gilson; K.H. Thompson

Publisher: Elsevier Science
Year: 1970
Tongue: English
Weight: 224 KB
Volume: 5
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(70)85008-4

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✦ Synopsis

Nuclear magnetic resonance

wide line and spin lattice relaxation time measurements on crystalline pyrene reveal a transition over the temperature range 255-285%. attributed to the reorientation of pyrene molecules about the axis perpendicular to the molecular plane. Activation energy for the molecular motion is 13.8 kcal mole-1 from linewidth analysis and 13.5 kcal mole-l from 2'1 measurements.

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