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DC Field | Value | Language |
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dc.contributor.advisor | Gillespie, R.J. | en_US |
dc.contributor.author | Sowa, Marilyn Cunningham Joy | en_US |
dc.date.accessioned | 2014-06-18T16:43:17Z | - |
dc.date.available | 2014-06-18T16:43:17Z | - |
dc.date.created | 2010-12-22 | en_US |
dc.date.issued | 1975-11 | en_US |
dc.identifier.other | opendissertations/3760 | en_US |
dc.identifier.other | 4777 | en_US |
dc.identifier.other | 1709058 | en_US |
dc.identifier.uri | http://hdl.handle.net/11375/8565 | - |
dc.description.abstract | <p>I₂⁺Sb₂F₁₁⁻, a dark blue crystalline solid, was prepared by reaction of I₂ with SbF₅ using dried liquid SO₂ as solvent. The compound melts at 122°C and is moisture-sensitive. The presence of the I₂⁺ cation was established by laser Raman spectroscopy and by X-ray crystallography. The structure determination showed that the I₂⁺ cation has an I - I bond length of 2.557(4) Å.</p> <p>The triatomic cations I₃⁺, IBr₂⁺ and ICI₂⁺ were produced in acidic solutions and their Raman spectra were obtained using specially designed spinning Raman cells. IBr₂⁺ and ICI₂⁺ were also prepared as the solid compounds IBr₂⁺SO₃F⁻ and ICI₂⁺SbCl₆⁻ and their Raman spectra were recorded. A simple valence force field treatment was applied to the Raman data for these three symmetric IX₂⁺ cations. Force constants were calculated and the bond angles of the bent structures were estimated.</p> <p>The triatomic interhalogen cation I₂Cl⁺ was prepared by direct reaction of ICI and SbCl₅ to yield solid I₂Cl⁺SbCl₆⁻. By a similar halogen transfer process I₂Br⁺SbCl₅Br⁻ was prepared from IBr and SbCl₅. The Raman spectra of both of these dark-colored, low-melting solids were obtained using spinning cell techniques. Observation of Raman bands which could be assigned to a bending mode and to I - I and I - X stretching modes established that these two iodine-containing cations have an unsymmetric angular structure.</p> <p>The existence of a new polyatomic cation Inⁿ⁺ containing iodine in a +1 oxidation state is proposed. This species has a strong Raman band at 195 cm⁻¹. The Raman evidence indicates that Inⁿ⁺ exists in H₂SO₄ and HSO₃F solutions and also in solid or molten ISO₃F.</p> | en_US |
dc.subject | Chemistry | en_US |
dc.subject | Chemistry | en_US |
dc.title | A Laser Raman Spectroscopic Study of Iodine Cations | en_US |
dc.type | thesis | en_US |
dc.contributor.department | Chemistry | en_US |
dc.description.degree | Doctor of Philosophy (PhD) | en_US |
Appears in Collections: | Open Access Dissertations and Theses |
Files in This Item:
File | Size | Format | |
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fulltext.pdf | 3.16 MB | Adobe PDF | View/Open |
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