The phase behaviour of six orientationally-disordered organic cage molecules, norbornane, norbornylene, norbornadiene, quadricyclane, bicyclooctene, and fluoroadamantane, has been characterized by differential scanning calorimetry, and variable-temperature and -pressure infrared and Raman spectroscopy. All of these compounds undergo one or more solid-solid phase transitions on cooling from disordered phases to ordered, crystalline structures, except for fluoroadamantane, which forms a glass. The phases of all these solids under high pressure have been shown to be the same as those formed at low temperatures. / A method of using pressure dependences of vibrational modes to aid in making spectral assignments is proposed, which proved to be very useful in classifying C-H stretching vibrations and modes which have large contributions from skeletal stretching motions. A semiquantitative analysis of the effect of pressure on different types of stretching vibrations is described.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.74657 |
| Date | January 1991 |
| Creators | Kawai, Nancy T. |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Doctor of Philosophy (Department of Chemistry.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 001239484, proquestno: AAINN67766, Theses scanned by UMI/ProQuest. |
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