New Organotin Derivatives of Trilacunary Keggin Polyanions

Autor:	Mariana Rusu, Polycarpos Falaras, Aglaia Koutsodimou, Adrian‐Raul Tomşa, Marie-Claude Bernard
Rok vydání:	2005
Předmět:	Aqueous solution Chemistry Inorganic chemistry Nuclear magnetic resonance spectroscopy Redox Inorganic Chemistry symbols.namesake Keggin structure chemistry.chemical_compound Covalent bond Polymer chemistry Polyoxometalate symbols Physical and Theoretical Chemistry Cyclic voltammetry Raman spectroscopy
Zdroj:	Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry. 35:651-659
ISSN:	1553-3182 1553-3174
DOI:	10.1080/15533170500225599
Popis:	Three new organotin derivatives of polyoxometalates have been obtained by reaction between the trilacunary precursors [PW9O34]9− and [AsW9O34]9− and organotin trichlorides RSnCl3 (R=Me, Bu) in aqueous solution. The compounds were characterized using elemental and thermogravimetrical analysis, UV, IR, Raman and multinuclear (1H, 13C, 31P) NMR spectroscopy, ESI‐MS and cyclic voltammetry. Ion‐exchange, and ESI‐MS experiments provided evidence for covalent, inner‐sphere bonding of organotin groups to the trilacunary [XW9O34]9− heteropolyanions. Cyclic voltammograms of all three organotin complexes exhibited two pairs of reduction/oxidation waves with negative half‐wave potential (E1/2) values. These waves were attributed to redox processes corresponding to the polyoxotungstate framework.
Databáze:	OpenAIRE
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