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

被引：10

作者：

Bartlett, Stuart A. ^{[1
]}

Sackville, Emma V. ^{[2
]}

Gibson, Emma K. ^{[1
,3
]}

Celorrio, Veronica ^{[1
]}

Wells, Peter P. ^{[1
,4
]}

Nachtegaal, Maarten ^{[5
]}

Sheehan, Stafford W. ^{[6
]}

Hintermair, Ulrich ^{[2
]}

机构：

[1] Diamond Light Source, Harwell Sci & Innovat Campus, Didcot OX11 0DE, Oxon, England

[2] Univ Bath, Ctr Sustainable Chem Technol, Bath BA2 7AY, Avon, England

[3] Univ Glasgow, Sch Chem, Glasgow G12 8QQ, Lanark, Scotland

[4] Univ Southampton, Sch Chem, Southampton SO17 1BJ, Hants, England

[5] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

[6] Catalyt Innovat, Fall River, MA 02723 USA

来源：

CHEMICAL COMMUNICATIONS | 2019年 / 55卷 / 54期

基金：

英国工程与自然科学研究理事会;

关键词：

OXYGEN-EVOLUTION; OXIDE NANOPARTICLES; COMPLEXES; CHEMISTRY; SYSTEMS; LIGAND; DIMERS; STATES;

D O I：

10.1039/c9cc02088h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：7832 / 7835

页数：4

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