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Accession Number:
AD0753269
Title:
Resolution of Motions in the Three Solid Phases of Methylammonium Chloride (CH3NH3Cl) by NMR.
Corporate Author:
ILLINOIS UNIV URBANA NOYES CHEMICAL LAB
Report Date:
1972-09-06
Abstract:
The alpha, beta, and gamma phases of solid methylammonium chloride CH3NH3Cl and its partially deuterated analogs CD3NH3Cl and CH3ND3Cl were investigated using temperature dependent static and rotating frame proton spin-lattice relaxation times, T1 and T1rho, respectively. Broadline proton magnetic resonance studies were performed in the supercooled gamma phases. It was found that partial deuteration causes the beta to gamma transition temperature to shift to higher temperatures. The motions in the three modifications of these substances were analyzed using the spin-lattice relaxation data and the second moments for the supercooled gamma phase. A resolution of the CH3 and NH3 rotations about the C-N axes was accomplished. The NMR results pertaining to the three phases of these compounds are discussed and related to other studies. Author
Descriptive Note:
Technical rept.,
Pages:
0025
Contract Number:
N00014-67-A-0305-0023
File Size:
0.00MB
