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Structural, spectroscopic and electronic properties of a family of face-shared bi-octahedral Ru25+/6+ complexes with a bridging 2,5-di(2-pyridyl)pyrrolide ligand

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Abstract

A family of Ru2 dimers, [Ru2(μ-κ2N,N′:κ2N′,N′′-dpp)2(μ-X)(X)2]q+ (X = Cl, Br, q = 0 and X = I, q = 1) is synthesized from a [Ru2(OAc)4Cl] paddlewheel starting material. The neutral products are mixed-valence Ru25+ dimers with a Ru–Ru bond order of 0.5, while the cationic iodide is a Ru26+ dimer with formal bond order of 1.0. The Ru–Ru distance is strikingly independent of the identity of the halide and the oxidation state of ruthenium, most likely a consequence of the small bridging nitrogen which constrains the geometry. The spectroscopic properties (EPR, UV/Vis) of the Br complex are consistent with a large σ–σ* splitting in [Ru2(μ-κ2N,N′:κ2N′,N′′-dpp)2(μ-Br)(Br)2].

Graphical abstract: Structural, spectroscopic and electronic properties of a family of face-shared bi-octahedral Ru25+/6+ complexes with a bridging 2,5-di(2-pyridyl)pyrrolide ligand

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Article information


Submitted
10 Apr 2020
Accepted
05 May 2020
First published
05 May 2020

Dalton Trans., 2020, Advance Article
Article type
Paper

Structural, spectroscopic and electronic properties of a family of face-shared bi-octahedral Ru25+/6+ complexes with a bridging 2,5-di(2-pyridyl)pyrrolide ligand

S. Kang, Z. Zhou, C. Xiong, B. Liu, J. E. McGrady, M. Obies, C. Liu, P. He and X. Yi, Dalton Trans., 2020, Advance Article , DOI: 10.1039/D0DT01325K

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