MOLECULAR MOTIONS IN SOLID (CH3NH3)(5)BI2CL11 AS STUDIED BY PROTON NUCLEAR-MAGNETIC-RESONANCE

Authors
DECRESSAIN R COCHON E LEFEBVRE J MEURER B JAKUBAS R
Citation
R. Decressain et al., MOLECULAR MOTIONS IN SOLID (CH3NH3)(5)BI2CL11 AS STUDIED BY PROTON NUCLEAR-MAGNETIC-RESONANCE, Journal of physics and chemistry of solids, 55(2), 1994, pp. 139-144
Citations number
22
Categorie Soggetti
Physics, Condensed Matter",Chemistry
Journal title
Journal of physics and chemistry of solids → ACNP
ISSN journal
00223697
Volume
55
Issue
2
Year of publication
1994
Pages
139 - 144
Database
ISI
SICI code
0022-3697(1994)55:2<139:MMIS(A>2.0.ZU;2-W
Abstract
The temperature dependencies of the H-1 spin-lattice relaxation times (T-1z,T-1 rho), and the second moment M(2) of proton NMR absorption we re measured for solid (CH3NH3), Bi2Cl11 and its partially deuterated a nalogs between 100 and 350 K. The results show that the methylammonium cations undergo rapid overall rotation in the room temperature phase, and rotations around the C-3 axis in the low temperature phase. The a ctivation energies associated with those motions were obtained using a BPP model. The NMR results relating to the three phases of these comp ounds are discussed and compared with other studies.