| DOI | Trouver le DOI : https://doi.org/10.1021/jp1094273 |
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| Auteur | Rechercher : Shin, W.; Rechercher : Shin, K.1; Rechercher : Seol, J.; Rechercher : Koh, D.-Y.; Rechercher : Park, S.; Rechercher : Lee, H. |
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| Affiliation | - Conseil national de recherches du Canada
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| Format | Texte, Article |
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| Sujet | Brine rejections; Clathrate hydrate; Cobalt complexes; Host lattice; Hydrate formation; Metastabilities; Metastable structures; NMR spectrum; Water cage; Cobalt; Ethane; Hydrates; Hydration; Ions; Metal complexes; Metastable phases; Nuclear magnetic resonance spectroscopy; Cobalt compounds |
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| Résumé | The metal complex of [Co(NH3)6]3+ is introduced to C2H6 hydrate to confirm its possible inclusion in hydrogen-bonded water cages and the occurrence of metastable structure. The 13C NMR spectra of C2H6 + ([Co(NH3)6]Cl3 + 6NaOH in D2O) hydrate confirmed a new peak at 6.5 ppm matching with C2H6 in sII-L cages. The retarded appearance of metastable sII phase is due to brine rejection of the cobalt complex occurring during solution freezing. The anions of OH- and F- were found to be incorporated in the host water cage framework, providing proton-deficient sites. The ionic conductivity of the frozen [Co(NH3)6]3+ solution increased up to 20-fold after ethane hydrate formation, implying the incorporation of F- into the host lattice. A notable finding of this work is that the metastability occurs only when the cobalt complex is in the presence of anions such as OH- and F-. © 2011 American Chemical Society. |
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| Date de publication | 2011 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 21271670 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 4d87e8fd-b930-4b73-a7bf-d71489f48968 |
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| Enregistrement créé | 2014-03-24 |
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| Enregistrement modifié | 2020-04-21 |
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