wizyta

od 2020-09-20

Title: A proton NMR study of n-decylammonium chain dynamics in the perovskite-type layered compound (C10H21NH3)2CDCL4

Source: Zeitschrift fur Naturforschung Section A-A Journal of Physical Sciences

Year : 1993

Abstract:

A detailed proton second moment and spin-lattice relaxation time investigation of the bilayered compound (C10H21NH3)2CdCl4 is reported. In the low temperature phase the methyl group executes a classical threefold reorientation, while the NH3 group is involved in a similar reorientation in an asymmetric potential well. Evidence for defect chain motions in this phase has been found, and information regarding the potential wells associated with these motions has been extracted from the data. In the high temperature phase, slow chain defect motions and fast fourfold reorientations of chains about their long axes, parallel to the normal to the bilayer, have been observed.

DOI: 10.1515/zna-1993-0405   (Pobrane:  2021-01-10)