Ground‐ and Excited‐State Mixed Valency in a 4,4′‐Bipyridine‐Bridged Bimetallic Di‐Ruthenium Complex
Abstract
The bimetallic complex trans , trans ‐[{Ru II (py) 4 Cl} 2 (µ‐4,4′‐bpy)](PF 6 ) 2 ( Ru(44b)Ru (PF 6 ) 2 ) was synthesized and studied in its ground‐state and excited‐state mixed‐valence forms, using trans ‐[Ru II (py) 4 Cl(4,4′‐bpy)](PF 6 ) ( Ru(44b) (PF 6 )) as a monometallic reference. X‐ray crystallography, UV–vis‐NIR‐IR spectroelectrochemistry, and femtosecond transient‐absorption spectroscopies were complemented with DFT and TD‐DFT calculations. The 4,4′‐bipyridine bridge was found to promote poor but significant metal–metal electronic coupling in both the ground and excited states, revealed by intervalence charge‐transfer absorptions and by extended MLCT excited‐state lifetimes.
Fields of Study & Subjects
Organic Light-Emitting Diodes Research
Magnetism in coordination complexes
Metal complexes synthesis and properties
Publication details
- Journal / source
- European Journal of Inorganic Chemistry
- Publisher
- Wiley
- Volume
- 29
- Issue
- 16
- Publication date
- 31 March 2026
- Language
- EN