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Heterobimetallic Gold/Ruthenium Complexes Synthesized via Post‐functionalization and Applied in Dual Photoredox Gold Catalysis

Bayer, Lea 1; Birenheide, Bernhard S. 1; Krämer, Felix 1; Lebedkin, Sergei 2; Breher, Frank 1
1 Institut für Anorganische Chemie (AOC), Karlsruher Institut für Technologie (KIT)
2 Institut für Nanotechnologie (INT), Karlsruher Institut für Technologie (KIT)

Abstract:

The synthesis of heterobimetallic AuI/RuII complexes of the general formula syn- and anti-[{AuCl}(L1∩L2){Ru(bpy)2}][PF6]2 is reported. The ditopic bridging ligand L1∩L2 refers to a P,N hybrid ligand composed of phosphine and bipyridine substructures, which was obtained via a post-functionalization strategy based on Diels-Alder reaction between a phosphole and a maleimide moiety. It was found that the stereochemistry at the phosphorus atom of the resulting 7-phosphanorbornene backbone can be controlled by executing the metal coordination and the cycloaddition reaction in a different order. All precursors, as well as the mono- and multimetallic complexes, were isolated and fully characterized by various spectroscopic methods such as NMR, IR, and UV-vis spectroscopy as well as cyclic voltammetry. Photophysical measurements show efficient phosphorescence for the investigated monometallic complex anti-[(L1∩L2){Ru(bpy)2}][PF6]2 and the bimetallic analogue syn-[{AuCl}(L1∩L2){Ru(bpy)2}][PF6]2, thus indicating a small influence of the {AuCl} fragment on the photoluminescence properties. The heterobimetallic AuI/RuII complexes syn- and anti-[{AuCl}(L1∩L2){Ru(bpy)2}][PF6]2 are both active catalysts in the P-arylation of aryldiazonium salts promoted by visible light with H-phosphonate affording arylphosphonates in yields of up to 91 %. ... mehr

Zugehörige Institution(en) am KIT Institut für Anorganische Chemie (AOC)
Institut für Nanotechnologie (INT)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 12.10.2022
Sprache Englisch
Identifikator ISSN: 0947-6539, 1521-3765
KITopen-ID: 1000151069
HGF-Programm 43.31.01 (POF IV, LK 01) Multifunctionality Molecular Design & Material Architecture
Erschienen in Chemistry – A European Journal
Verlag John Wiley and Sons
Band 28
Heft 57
Seiten Art.Nr. e202201856
Vorab online veröffentlicht am 04.08.2022
Nachgewiesen in Web of Science
Scopus
OpenAlex
Dimensions
Globale Ziele für nachhaltige Entwicklung Ziel 6 – Sauberes Wasser und Sanitär-Einrichtungen

Verlagsausgabe §
DOI: 10.5445/IR/1000151069
Veröffentlicht am 04.10.2022
Originalveröffentlichung
DOI: 10.1002/chem.202201856
Scopus
Zitationen: 7
Web of Science
Zitationen: 7
Dimensions
Zitationen: 5
Seitenaufrufe: 72
seit 04.10.2022
Downloads: 99
seit 06.10.2022
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