Work

Ground‐ and Excited‐State Mixed Valency in a 4,4′‐Bipyridine‐Bridged Bimetallic Di‐Ruthenium Complex

Year: 2026

Type: article

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.

Source: European Journal of Inorganic Chemistry

DOI: 10.1002/ejic.70191

Authors: Ivana Ramírez‐Wierzbicki, Frank W. Heinemann, Leonardo D. Slep, Alejandro Cadranel

Institutions: Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad de Buenos Aires, Instituto de Química-Física de los Materiales, Medio Ambiente y Energía, Friedrich-Alexander-Universität Erlangen-Nürnberg

Language: English

Topic: Photochemistry and Electron Transfer Studies

Subfield: Physical and Theoretical Chemistry

Field: Chemistry

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $4,050

Funder: Consejo Nacional de Investigaciones Científicas y Técnicas