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Instruments / Technical Area	Publication Details	Published	Actions
B18-Core EXAFS E01-JEM ARM 200CF E02-JEM ARM 300CF	Design, identification and evolution of surface ruthenium (II/III) single‐site for CO activation Liqun Kang , Bolun Wang , Adam Thetford , Ke Wu , Mohsen Danaie , Qian He , Emma Gibson , Ling-Dong Sun , Hiroyuki Asakura , Richard Catlow , Feng Ryan Wang Angewandte Chemie International Edition DOI: 10.1002/anie.202008370 Diamond Proposal Number(s): [16966, 17559, 18909, 19246, 19318, 20643, 20847, 17377, 15151, 14239] Open Access Show Abstract ▼ Abstract: Ru(II) compounds are widely used in catalysis, photocatalysis and medical applications. They are usually obtained in reductive environment as molecular O 2 can oxidize Ru(II) to Ru(III) and Ru(IV). Here we report the design, identification and evolution of an air‐stable surface ‐[bipy‐Ru(II)(CO) 2 Cl 2 ] site that is covalently mounted onto a polyphenylene framework. Such Ru(II) site was obtained by reduction of ‐[bipy‐Ru(III)Cl 4 ] ‐ with simultaneous ligand exchange from Cl ‐ to CO. This structural evolution was witnessed by a combination of in situ X‐ray and infrared spectroscopy studies. The ‐[bipy‐Ru(II)(CO) 2 Cl 2 ] site enables oxidation of CO with a turnover frequency of 0.73 × 10 ‐2 s ‐1 at 462 K, while the Ru(III) site is completely inert. This work contributes to the studies of structure‐activity relationship by demonstrating a practical control over both geometric and electronic structures of single‐site catalysts at molecular level, which can be further applied in other single site catalyst researches.	Sep 2020

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B18-Core EXAFS
E01-JEM ARM 200CF
E02-JEM ARM 300CF

Design, identification and evolution of surface ruthenium (II/III) single‐site for CO activation