Reactivity of [Ru₄(¦Ì-H)₄(CO)₁₂] with bidentate ligands containing at least one N-heterocyclic carbene moiety

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• 作者：Javier A. Cabeza ; ^{jac@uniovi.es} ; Marina Damonte ; M. Guadalupe Herná ; ndez-Cruz
• 关键词：Ruthenium ; Cluster compounds ; N-heterocyclic carbenes ; NHC-thioether ligands ; NHC-phosphine ligands ; NHC-pyridine ligands
• 刊名：Journal of Organometallic Chemistry
• 出版年：2012
• 出版时间：15 July, 2012
• 年：2012
• 卷：711
• 期：Complete
• 页码：68-74
• 全文大小：863 K

文摘

The tetraruthenium carbonyl cluster complexes [Ru₄(¦Ì-H)₄(¦Ê²-Lⁿ)(CO)₁₀], which contain a ditopic ligand (Lⁿ) in which an N-heterocyclic carbene moiety is combined with a thioether (L¹), a phosphine (L² and L³), an NHC (L⁴), or a pyridine (L⁵ and L⁶) fragment, have been prepared by treating [Ru₄(¦Ì-H)₄(CO)₁₂] with the corresponding ligand. In these compounds, the ditopic ligand chelates a ruthenium atom that is also attached to three hydrides. In the reactions involving L¹, L² and L³, an ionic species, identified as [HLⁿ]⁺ [Ru₄(¦Ì-H)₃(CO)₁₂]^{?/sup>, has been recognized as a reaction intermediate.}