Some Au3Ru3 clusters. X-ray structures of Ru3(μ3-CMeCHCMe) (CO)8{Au3(PPh3)3} and Ru3(μ3-C2Ph) (CO) 8{Au3(PPh3) 3}

Article abstract of DOI:10.1016/S0022-328X(97)00224-6

Several clusters containing Au₃Ru₃ cores have been made from reactions between hydrido-triruthenium clusters or AuRu₃ clusters and [O{Au(PPh₃)}₃][BF₄]. In the former case, the Au₃(PPh₃)₃ group acts as a three-electron donor, replacing (H + CO). The molecular structures of Ru₃(μ₃-CMeCHCMe(CO)₈{Au₃(PPh₃)₃} (4) and Ru₃(μ₃-C₂Ph(CO)₈{Au₃(PPh₃)₃} (13) have been determined by X-ray crystallography. Comparisons are made between the parent Ru₃ clusters and their aurated derivatives, which may contain open (bent) or closed triangular Au₃P₃ moieties, according to whether there is more or less electron density on the cluster.