A ruthenium carbonyl cluster containing a hydroquinone ligand: A layered structure with a polymetallic species. Structure and electrochemical characterization

The reaction of [Ru3(CO)12] with 1,4-benzoquinone, in a hydrogen atmosphere led to the formation of a product with the formula [(μ-H)Ru3(CO)10(μ2-O–C6H4OH)] which crystallizes with two molecules of free hydroquinone in the asymmetric unit with which it forms an arrangement of hydrogen bridges leading to a layered structure of trinuclear metallic and hydroquinone fragments. Electrochemical studies showed that electrode inhibition is obtained by cycling of the oxidation process of this compound.

Graphical abstractThe structure of compound [(μ-H)Ru3(CO)10(μ2-O–C6H4OH)] shows it to co-crystallize with two molecules of free hydroquinone forming a layered structure of trinuclear metallic and hydroquinone fragments.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► The reaction of [Ru3(CO)12] with benzoquinone and hydrogen was carried out. ► The crystal structure shows the presence of intramolecular interactions. ► Electrochemical measurements of the product indicate electrode inhibition occurs.