Synthesis and structure of Ru5(m5-C2PPh2)(m-dppm)(m-PPh2)(CO)11.thf

The reaction of the open pentanuclear cluster Ru5(µ5-C2PPh2)(µ-PPh2)(CO)13 (1) with dppm afforded the previously described complex Ru5(µ5-C2PPh2)(µ-PPh2)(CO)12(dppm) (2), with six Ru–Ru bonds and a chelating dppm ligand, together with Ru5(µ5-C2PPh2)(µ-dppm)(µ-PPh2)(CO)11 (3), whose structure is reported here (seven Ru–Ru bonds). The bidentate phosphine bridges an outer Ru–Ru vector, adjacent to that bridged by the PPh2 group.