Molecular motions and structural changes have been studied as a function of temperature in n-undecylammonium chloride by employing nuclear magnetic resonance and differential scanning calorimetry techniques.
Spin-lattice relaxation, phase transitions, and molecular freedom in choline chloride and iodide
β Scribed by John D Graham; Ralph H Hannon
- Publisher
- Elsevier Science
- Year
- 1976
- Weight
- 296 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0022-2364
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
A series of the d 6 iron(I1) complexes with bulky organic ligands (like [ Fe(bzpy),(NCS),]) can exist in two spin forms: in the low-spin ( S = 0) form at low temperature and in the high-spin ( S = 2) form at high temperature. In the crystal phase, the transition between these two forms may be either
General analytical formulae describing the various contributions to the total spin-lattice relaxation rate in metallic materials (single crystals or powders) are presented. The formulae are obtained in the tight-binding approximation and can be easily used for any point-group symmetry. The cubic (O(
H, '3Na and 3'P spin-lattice relaxation times and the 'H second moment of an amorphous sample of fructose 6-phosphate have been measured. The motional parameters of the water molecule have been extracted by employing a model in which the motions are characterized by a Gaussian distribution of correl