Characterization
of a Mixed-Valence Ru(II)/Ru(III)
Ion-Pair Complex. Unexpected High-Frequency Electron Paramagnetic
Resonance Evidence for Ru(III)–Ru(III) Dimer Coupling

Impert, Olga; Kozakiewicz, Anna; Wrzeszcz, Grzegorz; Katafias, Anna; Bieńko, Alina; van Eldik, Rudi; Ozarowski, Andrew

doi:10.1021/acs.inorgchem.0c01068.s001

ic0c01068_si_001.pdf (648.29 kB)

Characterization of a Mixed-Valence Ru(II)/Ru(III) Ion-Pair Complex. Unexpected High-Frequency Electron Paramagnetic Resonance Evidence for Ru(III)–Ru(III) Dimer Coupling

journal contribution

posted on 2020-05-22, 19:13 authored by Olga Impert, Anna Kozakiewicz, Grzegorz Wrzeszcz, Anna Katafias, Alina Bieńko, Rudi van Eldik, Andrew Ozarowski

In this contribution, we report the synthesis and full characterization of the first mixed-valence Ru(II)/Ru(III) ion-pair complex, [Ru^II(bipy)₂(pic)]⁺[cis-Ru^IIICl₂(pic)₂]⁻, in the solid state and in aqueous solution, where bipy = 2,2′-bipyridine and pic^– = picolinate. In addition, unexpected high-frequency electron paramagnetic resonance evidence for interactions between two neighboring Ru(III) ions, resulting in a triplet state, S = 1, was found.