Carboxyl-functionalized task-specific ionic liquids for solubilizing metal oxides

Imidazolium, pyridinium, pyrrolidinium, piperidinium, morpholinium, and quaternary ammonium bis(trifluoromethylsulfonyl)imide salts were functionalized with a carboxyl group. These ionic liquids are useful for the selective dissolution of metal oxides and hydroxides. Although these hydrophobic ionic...

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Veröffentlicht in:	Inorganic chemistry Jg. 47; H. 21; S. 9987
Hauptverfasser:	Nockemann, Peter, Thijs, Ben, Parac-Vogt, Tatjana N, Van Hecke, Kristof, Van Meervelt, Luc, Tinant, Bernard, Hartenbach, Ingo, Schleid, Thomas, Ngan, Vu Thi, Nguyen, Minh Tho, Binnemans, Koen
Format:	Journal Article
Sprache:	Englisch
Veröffentlicht:	United States 03.11.2008
ISSN:	1520-510X, 1520-510X
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Beschreibung
Zusammenfassung:	Imidazolium, pyridinium, pyrrolidinium, piperidinium, morpholinium, and quaternary ammonium bis(trifluoromethylsulfonyl)imide salts were functionalized with a carboxyl group. These ionic liquids are useful for the selective dissolution of metal oxides and hydroxides. Although these hydrophobic ionic liquids are immiscible with water at room temperature, several of them form a single phase with water at elevated temperatures. Phase separation occurs upon cooling. This thermomorphic behavior has been investigated by (1)H NMR, and it was found that it can be attributed to the temperature-dependent hydration and hydrogen-bond formation of the ionic liquid components. The crystal structures of four ionic liquids and five metal complexes have been determined.
Bibliographie:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1520-510X 1520-510X
DOI:	10.1021/ic801213z