New heterometallic di-μ-hydroxo chromium(III)–iridium(III) and rhodium(III)–iridium(III) dinuclear aqua ions

Autor:	Silvia E. Castillo-Blum, A. Geoffrey Sykes, L. Gerardo Martínez-Jardines, Vanesaa A. Sánchez-Ortiz
Rok vydání:	1998
Předmět:	Metal Chromium chemistry Absorption spectroscopy visual_art Inorganic chemistry Polymer chemistry visual_art.visual_art_medium chemistry.chemical_element General Chemistry Iridium Rhodium Ion
Zdroj:	Journal of the Chemical Society, Dalton Transactions. :663-666
ISSN:	1364-5447 0300-9246
DOI:	10.1039/a706920k
Popis:	The synthesis and solution characterisation of bis(µ-hydroxo) heterometallic chromium(III)–iridium(III) and rhodium(III)–iridium(III) dinuclear aqua ions, namely [(H2O)4Cr(µ-OH)2Ir(H2O)4]4+ and [(H2O)4Rh(µ-OH)2Ir(H2O)4]4+ have been performed. Formation of such dinuclear ions is facilitated in alkaline media. Oxidation of the iridium(III) to iridium(IV) in basic solutions was avoided by working under oxygen-free conditions. Separation and purification of the dinuclear ions has been carried out by ion-exchange chromatography. Solution characterisation included metal analyses, charge determination and UV/VIS absorption spectroscopy.
Databáze:	OpenAIRE
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