Study of internal motions through N.Q.R. in 6-Chloropyridin-2-ol

Abstract

Chlorine-35 n.q.r, has been observed for the first time in 6-chloropyridin-2-ol and its temperature dependence has been studied from 77 K to room temperature. The torsional frequencies and their temperature dependences have been calculated by using Bayer's theory with and without Tatsuzaki's modification.

Temperature dependence study of chlorine NQR frequency and spin-lattice relaxation time in 2-amino,-3,5-dichloropyridine

“…24 -26 The moments of inertia, A i , were calculated using structural data. Since no x-ray data are available for this compound, we used the xray data for 2-amino-5-chloropyridine reported by Kvick and Backeus 27 and that of 3,5-dichloropyridine by Romain et al 16 to identify typical bond lengths and angles. The temperature variations of the torsional frequencies for lines I and II are shown in Figs 2 and 3, respectively.…”