Neutron powder diffraction patterns were measured for the ordered a-phase and the disordered b-phase of deuterated methanol. The structure of the a-phase at 160 K is in agreement with that found earlier at 15 K. A complete refinement of the structure of the b-phase at 170 K was also carried out. The
Solid-solid phase transitions in phenalkylammonium salts
β Scribed by Michiel J.M. Van Oort; Mary Anne White
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 999 KB
- Volume
- 139
- Category
- Article
- ISSN
- 0040-6031
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π SIMILAR VOLUMES
Phase transition temperatures for solid deuterium bromide are calculated in the effective field approximation. The crystal structure is treated as a twoklimensional lattice of zig-zag chains of DBr molecules. Dipole-dipole and quadrupolequadrupole interactions are included up to second neighbors. in
characteristics similar to those of zwitterionic phospholipids A series of catanionic surfactants were prepared by making and their phase behavior parallels that of a lecithin-water an equimolar mixture of cationic (alkylammonium chloride) and system (6). ## anionic (sodium alkyl sulfate) surfactan