Inorganic oxygen carriers as models for biological systems /
| Main Author: | |
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| Other Authors: | , , |
| Format: | Thesis Book |
| Language: | English |
| Published: |
[College Station, Tex.] :
McLendon,
1976.
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| Subjects: | |
| Online Access: | Link to ProQuest copy Link to OAKTrust copy |
| Abstract: | Studies of equilibria, reactivity, and electronic structure of some cobalt dioxygen complexes are reported, with cobalt: dioxygen stoichiometries of 2Co:10₂ and 1CO:10₂. Potentiometric equilibrium studies of the reaction of N(2hydroxyethyl)diethylenetriamine with Cobalt(II) and dioxygen to form a ternary complex show the stability of that complex to be of the order predicted from the σ donor ability of the ligand. Analysis of potentiometric results and u.v. spectra indicate the presence of a secondary y hydroxo bridge. Studies of the reduction of μ hydroxo μ dioxygen cobalt chelates by ferrous ion indicate an inner sphere pathway for the μ peroxo complexes. Studies of irreversible oxidation of some μ peroxo complexes Indicate a complex reaction pathway which depends markedly on pH and concentration. ESR and ligand field spectra are reported and analyzed for the [Co(CN)₅O₂]³⁻ system and the [Co(N, N'dimethylethylenediamine) ₂C10₂]⁺ system . The value of DqO₂⁻ is shown to be DqO₂⁻ (greater than or equal to sign) DqNH₃ and may vary somewhat with the composition of the system considered. In aqueous solution [Co(CN)₅O₂]³⁻ reacts by an unknown mechanism to generate [Co₂ (CN) ₁₀O₂]⁵⁻. An examination of the Fe phthalocyanine tetrasulfonate system, previously reported to complex dioxygen in aqueous solution, indicates the data may be more readily interpreted in terms of a simple ferric complex. |
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| Item Description: | "Major subject: Chemistry." Vita. |
| Physical Description: | viii, 84 leaves ; 28 cm |
| Bibliography: | Includes bibliographical references (leaves 74-82). |