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

Ramírez-Wierzbicki I, Heinemann FW, Slep LD, Cadranel A (2026)

Publication Type: Journal article

Publication year: 2026

Journal

European Journal of Inorganic Chemistry Wiley-VCH Verlag

DOI: 10.1002/ejic.70191

Abstract

The bimetallic complex trans,trans-[{RuII(py)4Cl}2(µ-4,4′-bpy)](PF6)2 (Ru(44b)Ru(PF6)2) was synthesized and studied in its ground-state and excited-state mixed-valence forms, using trans-[RuII(py)4Cl(4,4′-bpy)](PF6) (Ru(44b)(PF6)) 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.

Authors with CRIS profile

Frank Wilhelm Heinemann Lehrstuhl für Anorganische und Allgemeine Chemie Alejandro Cadranel

Involved external institutions

Universidad de Buenos Aires (UBA) / University of Buenos Aires AR Argentina (AR)

How to cite

APA:

Ramírez-Wierzbicki, I., Heinemann, F.W., Slep, L.D., & Cadranel, A. (2026). Ground- and Excited-State Mixed Valency in a 4,4′-Bipyridine-Bridged Bimetallic Di-Ruthenium Complex. European Journal of Inorganic Chemistry. https://doi.org/10.1002/ejic.70191

MLA:

Ramírez-Wierzbicki, Ivana, et al. "Ground- and Excited-State Mixed Valency in a 4,4′-Bipyridine-Bridged Bimetallic Di-Ruthenium Complex." European Journal of Inorganic Chemistry (2026).

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