Evidence for tetranuclear bis-μ-oxo cubane species in molecular iridium-based water oxidation catalysts from XAS analysis

Stuart A Bartlett, Emma V Sackville, Emma K Gibson, Veronica Celorrio, Peter P Wells, Maarten Nachtegaal, Stafford W Sheehan, Ulrich Hintermair

Research output: Contribution to journalArticle

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Abstract

The structure of a highly active pyridine-alkoxide iridium water oxidation catalyst (WOC) is examined by X-ray absorption spectroscopy (XAS). A detailed comparison with IrO2 points to a rigid molecular unit of low nuclearity, with the best analysis suggesting a novel tetrameric iridium-oxo cubane as the resting state.

Original languageEnglish
Pages (from-to)7832-7835
Number of pages4
JournalChemical communications (Cambridge, England)
Volume55
Issue number54
Early online date19 Jun 2019
DOIs
Publication statusE-pub ahead of print - 19 Jun 2019

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