Cluster-containing carbon-rich molecules: Reactions of ruthenium cluster carbonyls with {Au(PR3)}2(μ-Ctriple bond; length of mdashCCtriple bond; length of mdashC) (R = Ph, tol)

Complexes containing C4 ligands attached to one or two AuRu3 clusters by conventional σ, 2π interactions have been obtained from reactions between (R3P)AuC≡CC≡CAu(PR3) (R = Ph, tol) or Au(C≡CC≡CH){P(tol)3} and either Ru3(CO)12, Ru3(CO)10(NCMe)2 or Ru3(μ-dppm)(CO)10. The X-ray determined structures of {(R3P)AuRu3(CO)9}2(μ3,η2:μ3,η2-C2C2) [R = Ph (1) (three solvates), tol (2)], AuRu3{μ3,η2-C2C≡CAu(PPh3)}(CO)9(PPh3) (3) and {(Ph3P)AuRu3(μ-dppm)(CO)7} (μ3,η2:μ3,η2-C2C2){Ru3(μ-H)(μ-dppm)(CO)7} (4) are reported.