A low-valent dinuclear ruthenium diazadiene complex catalyzes the oxidation of dihydrogen and reversible hydrogenation of quinones

Open Access
Authors
Publication date 28-01-2019
Journal Chemical Science
Volume | Issue number 10 | 4
Pages (from-to) 1117-1125
Number of pages 9
Organisations
  • Faculty of Science (FNWI) - Van 't Hoff Institute for Molecular Sciences (HIMS)
Abstract
The dinuclear ruthenium complex [Ru2H(μ-H)(Me2dad)(dbcot)2] contains a 1,4-dimethyl-diazabuta-1,3-diene (Me2dad) as a non-innocent bridging ligand between the metal centers to give a [Ru2(Me2dad)] core. In addition, each ruthenium is bound to one dibenzo[a,e]cyclooctatetraene (dbcot) ligand. This Ru dimer converts H2 to protons and electrons. It also catalyzes reversibly under mild conditions the selective hydrogenation of vitamins K2 and K3 to their corresponding hydroquinone equivalents without affecting the C[double bond, length as m-dash]C double bonds. Mechanistic studies suggest that the [Ru2(Me2dad)] moiety, like hydrogenases, reacts with H2 and releases electrons and protons stepwise.
Document type Article
Note With supplementary files
Language English
Related dataset CCDC 1535559: Experimental Crystal Structure Determination CCDC 1852336: Experimental Crystal Structure Determination CCDC 1535510: Experimental Crystal Structure Determination CCDC 1535543: Experimental Crystal Structure Determination CCDC 1535561: Experimental Crystal Structure Determination
Published at https://doi.org/10.1039/c8sc02864h
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c8sc02864h (Final published version)
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