Tailoring RuIIPyridine/Triazole Oxygenation Catalysts and Using Photoreactivity to Probe their Electronic Properties

Autor:	Biprajit Sarkar, Margarethe van der Meer, Johannes Klein, Hendrik Stevens, Fritz Weisser, Stephan Hohloch
Rok vydání:	2015
Předmět:	Chemistry Ligand Organic Chemistry Substituent Triazole chemistry.chemical_element General Chemistry Photochemistry Redox Combinatorial chemistry Catalysis Ruthenium chemistry.chemical_compound Yield (chemistry) Pyridine
Zdroj:	Chemistry - A European Journal. 21:8926-8938
ISSN:	0947-6539
DOI:	10.1002/chem.201406441
Popis:	Tuning of ligand properties is at the heart of influencing chemical reactivity and generating tailor-made catalysts. Herein, three series of complexes [Ru(L)(Cl)(X)]PF6 (X=DMSO, PPh3 , or CD3 CN) with tripodal ligands (L1-L5) containing pyridine and triazole arms are presented. Triazole-for-pyridine substitution and the substituent at the triazole systematically influence the redox behavior and photoreactivity of the complexes. The mechanism of the light-driven ligand exchange of the DMSO complexes in CD3 CN could be elucidated, and two seven-coordinate intermediates were identified. Finally, tuning of the ligand framework was applied to the catalytic oxygenation of alkanes, for which the DMSO complexes were the best catalysts and the yield improved with increasing number of triazole arms. These results thus show how click-derived ligands can be tuned on demand for catalytic processes.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b0be002fbc93388c5fde5d514f33421b https://doi.org/10.1002/chem.201406441 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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