A quantum-mechanirxl Hamiltonian describing molecular orientation is developed for use in the I3rticc dynamics of moIecular crystals. It is expressed in terms of three of the four quaternions 3s coordinates together with their conju@e moment3. ## I_ fntroduction In the conventional treatment of n
Orientation of rigid linear molecules: A Hamiltonian for use in lattice dynamics
โ Scribed by S.H. Walmsley
- Publisher
- Elsevier Science
- Year
- 1985
- Tongue
- English
- Weight
- 250 KB
- Volume
- 114
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
A previous treatment for non-hriear molecules is adapted to the case of linear molecules. The quaterniom of the former case are replaced by direction cosines of the Linex axis The resulting Hamiltonian is developed for application to latticedynamics and other problems involving onentational displacemen&
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The combined use of a so-called internal standard and the isotope-labeled derivatization reagent for the quantification of analytes for liquid chromatography-mass spectrometry (LC/MS) was further studied. The sample solution (containing the analytes and an internal standard) was derivatized with the
## Abstract It is demonstrated that in a case where neither the proton nor the naturalโabundance ^13^Cโsatellite spectra of a partially oriented molecule carry enough structural information, one can determine the entire molecular geometry by the combined use of several liquid crystals as solvents.