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Tetrazine Chelate Ligands Bridging Two [Ru(acac)(2)] Fragments: Mixed Valency and Radical Complex Formation

SYSNO ASEP	0558484
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Tetrazine Chelate Ligands Bridging Two [Ru(acac)(2)] Fragments: Mixed Valency and Radical Complex Formation
Author(s)	Kaim, W. (DE) Löw, I. (DE) Ringenberg, M. R. (DE) Schwederski, B. (DE) Filippou, V. (DE) Fiedler, Jan (UFCH-W)_{RID, ORCID}
Article number	e202200152
Source Title	Zeitschrift für anorganische und allgemeine Chemie. - : Wiley - ISSN 0044-2313 Roč. 648, č. 23 (2022)
Number of pages	9 s.
Language	eng - English
Country	DE - Germany
Keywords	diruthenium complexes ; ruthenium ; epr ; l=3-amino-6-(3,5-dimethylpyrazol-1-yl)-1,2,4,5-tetrazine ; acetylacetonate ; superexchange ; coordination ; Crystal structure ; Cyclic voltammetry ; Diruthenium compounds ; EPR spectroscopy ; Spectroelectrochemistry
Subject RIV	CF - Physical ; Theoretical Chemistry
OECD category	Physical chemistry
R&D Projects	GA19-03160S GA ČR - Czech Science Foundation (CSF)
Method of publishing	Open access
Institutional support	UFCH-W - RVO:61388955
UT WOS	000810020700001
EID SCOPUS	85131725613
DOI	10.1002/zaac.202200152
Annotation	Using bis(3-methyl-2-pyridyl)-1,2,4,5-tetrazine 1, 3-(2-pyrimidyl)-6-methyl-1,2,4,5-tetrazine 2 and bis(2-pyrimidyl)-1,2,4,5-tetrazine=bmtz as ligands, the complexes 3=[Ru(acac)(2)(1)], 4={[Ru(acac)(2)](2)(1)], 5={[Ru(acac)(2)](2)(bmtz)], and 6={[Ru(acac)(2)](2)(2)] were prepared and identified by structure analysis of crystallized material. The one-electron oxidized form 6(PF6) was also studied structurally, suggesting a Class II mixed-valent situation. The neutral dinuclear systems exhibit two reversible oxidation processes with comproportionation constants 10(9.2)<K-c<10(14.1) and one reduction which were analyzed UV/vis/NIR and EPR spectroscopically. Oxidation produces largely metal-based mixed-valent cations with very weak intervalence absorptions in the near IR whereas the electron uptake occurs at the tetrazine acceptor.
Workplace	J. Heyrovsky Institute of Physical Chemistry
Contact	Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196
Year of Publishing	2023
Electronic address	http://hdl.handle.net/11104/0332128

Number of the records: 1