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

Journal article

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].

Authors: Kang, S-R; Zhou, Z-Q; Xiong, C-F; Liu, B; McGrady, JE

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: Royal Society of Chemistry
• Journal: Dalton Transactions
• Volume: 49
• Issue: 21
• Pages: 7053-7059
• Publication date: 2020-05-05
• Acceptance date: 2020-05-05
• DOI: 10.1039/d0dt01325k
• EISSN: 1477-9234
• ISSN: 1477-9226
• Pmid: 32400777
• Language: English
• Keywords: FFR