A survey of the forces acting on and in molecules and the relation of these forces to molecular spectroscopic investigations is presented. New results, both experimental and theoretical, are presented which demonstrate aspects of these forces. / The experimental results are the observation of quenching of tautomer fluorescence and normal phosphorescence of 7-azaindole H-bonded complexes in dipolar solvents. The former observation is obtained at room temperature and is observed when the concentration of an alcohol is varied with a fixed concentration of 7-axaindole in a hydrocarbon solvent. The latter observartion is obtained when solutions of 7-azaindole in dipolar solvents are cooled slowly as opposed to fast cooling with liquid nitrogen. These observations are attributed to local forces resulting from dipolar solvent cages around the H-bonded complexes. / The theoretical results are that, due to currents within molecules, the Hellmann-Feynman theorem fails at the 10-ppm level of accuracy. The general non-quantum-electrodynamical form of the non-electrostatic forces responsible for this failure is derived. The general results are applied to the molecule HD('+) for which the first-order perturbation theoretical correction due to these forces to the 1-0 vibrational transition energy for the ground electronic state is calculated. The value obtained is -0.072 cm('-1). This value agrees with the experimental minus theoretical energy difference obtained if the theoretical calculations neglects these forces. / Source: Dissertation Abstracts International, Volume: 41-03, Section: B, page: 0972. / Thesis (Ph.D.)--The Florida State University, 1980.
| Identifer | oai:union.ndltd.org:fsu.edu/oai:fsu.digital.flvc.org:fsu_74172 |
| Contributors | BROWN, CRAIG WILLIAM., The Florida State University |
| Source Sets | Florida State University |
| Detected Language | English |
| Type | Text |
| Format | 88 p. |
| Rights | On campus use only. |
| Relation | Dissertation Abstracts International |
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