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http://hdl.handle.net/11375/20381| Title: | Polyatomic Cations of Sulphur, Selenium and Tellurium |
| Authors: | Ummat, Parshotam Kumar |
| Advisor: | Gillespie, R. J. |
| Department: | Chemistry |
| Keywords: | polyatomic, cations, sulphur, selenium, tellurium, compounds, cations |
| Publication Date: | Sep-1970 |
| Abstract: | <p> The preparation of compounds containing polyatomic cations of sulphur, selenium and tellurium has been investigated by using oxidising agents such as AsF5, SbF5, S2O6F2 and SO3. New compounds, containing polyatomic cations Se8 2+, Se4 2+, Te3n n+, Te4 2+ Ten n+, S16 2+, S8 2+ and S4 2+, and anions of very strong acids such as Sb2F11- and AsF6- were isolated and characterised by a combination of the stoichiometry of the preparation reactions, UV-visible spectrophotometry, Infrared and Raman spectroscopy and magnetic susceptibility measurements.</p> <p> Solutions of sulphur in various concentrations of oleum were investigated in detail by UV-visible spectrophotometry and e.s.r. spectroscopy. Evidence is presented for the formation of the sulphur cations S16 2+, S8 2+ and S4 2+ in these media, and for the presence of low concentrations of the radical cations S8+ and S4+.</p> |
| URI: | http://hdl.handle.net/11375/20381 |
| Appears in Collections: | Open Access Dissertations and Theses |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Ummat_Parshotam_K._1970Sept_Ph.D..pdf | 2.79 MB | Adobe PDF | View/Open |
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