Ru4(CO)10(CCHPri)(OH)(PPh2) : a tetranuclear ruthenium carbonyl cluster with µ4-vinylidene and face-bridging hydroxo-groups; X-ray crystal structures of Ru4(CO)10(CCHPri)(OR)(PPh2)(R = H or Et)

Abstract

Fragmentation of Ru₃(CO)₁₁(Ph₂PCCPrⁱ) in wet THF or THF–EtOH generates the tetranuclear carbonyl clusters Ru₄(CO)₁₀(CCHPr¹)(OR)(PPh₂)(R = H, Et) which have been shown by X-ray diffraction to consist of ‘butterfly’ arrangements of metal atoms with multi-site bound µ₄-vinylidene and face-bridging OH or OR groups.