Applications of low-temperature crystallography
| Autor: | Billing, David Gordon |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 1991 |
| Předmět: | |
| Druh dokumentu: | Diplomová práce |
| Popis: | A dissertation submitted to the Faculty of Science, University of the Witwatersrand, Johannesburg for the Degree of Master of Science January, 1991. Two cryostats, a liquid nitrogen gas flow cryostat and a Be walled flow cryostat, suitable for use on Enraf Nonlus CAD4 four circle diffractometers have been commissioned and tested. The necessary techniques relating to crystal mounting and centring tor low-temperature data collection were also developed, The complete experimental procedure was tested by determining the crystal structures of the following three compounds at low-temperatures:N-arylpyrrolidin-2-one,4-p-hydroxyphenyl- 9,10,11-trihydroxy-8-ethyl-1,7-dioxaspiro[4,4]-nona-2,6-dione and 5,6-trans-Bromo- 5-hydroxy-3-nitrobicyclo[2,2.2]oct-2-ene.ln performing these structure determinations, some of the applications of low-temperature crystallography were considered. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
| Externí odkaz: |
|