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Dynamic dimer–monomer equilibrium in a cycloruthenated complex of [Re(η6-C6H6)2]+


Hernández-Valdés, Daniel; Wettstein, Lionel; Fernandez-Teran, Ricardo; Probst, Benjamin; Fox, Thomas; Spingler, Bernhard; Nadeem, Qaisar; Alberto, Roger (2020). Dynamic dimer–monomer equilibrium in a cycloruthenated complex of [Re(η6-C6H6)2]+. Chemical Communications, 56(73):10658-10661.

Abstract

Cycloruthenation is a well known process in organometallic ruthenium chemistry. In this work, we report unprecedented cycloruthenated rhenium bis-arene compounds with planar chirality. In a two-step process, the reaction of acetyl-pyridine with [Re(η6-C6H6)2]+ introduced a pyridinyl-methanol ligand at one of the arene rings. Coordination of [Ru(CO)2Cl2] led to cycloruthenation, and the products were obtained as two diastereomeric pairs of enantiomers. Under basic pH conditions, the two pairs of enantiomers undergo spontaneous and reversible dimerization. The cycloruthenated monomers were fully characterized, and the dimerization process was studied by NMR, IR spectroscopy, and DFT calculations.

Abstract

Cycloruthenation is a well known process in organometallic ruthenium chemistry. In this work, we report unprecedented cycloruthenated rhenium bis-arene compounds with planar chirality. In a two-step process, the reaction of acetyl-pyridine with [Re(η6-C6H6)2]+ introduced a pyridinyl-methanol ligand at one of the arene rings. Coordination of [Ru(CO)2Cl2] led to cycloruthenation, and the products were obtained as two diastereomeric pairs of enantiomers. Under basic pH conditions, the two pairs of enantiomers undergo spontaneous and reversible dimerization. The cycloruthenated monomers were fully characterized, and the dimerization process was studied by NMR, IR spectroscopy, and DFT calculations.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Department of Chemistry
Dewey Decimal Classification:540 Chemistry
Uncontrolled Keywords:Materials Chemistry, Electronic, Optical and Magnetic Materials, General Chemistry, Surfaces, Coatings and Films, Metals and Alloys, Ceramics and Composites, Catalysis
Language:English
Date:7 August 2020
Deposited On:27 Aug 2020 15:40
Last Modified:19 Sep 2020 06:04
Publisher:Royal Society of Chemistry
ISSN:1359-7345
OA Status:Hybrid
Publisher DOI:https://doi.org/10.1039/d0cc04180g
PubMed ID:32785303
Project Information:
  • : FunderSNSF
  • : Grant IDIZLSZ2_170856
  • : Project TitleSolar Light-driven Homogeneous Catalysis for Greener Industrial Processes with H2 as Energy Source and CO2 as C1 Building Block

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