TY - JOUR A1 - Adams, Chris J. A1 - Bruce, Michael I. A1 - Humphrey, Paul A. A1 - Skelton, Brian W. A1 - White, Allan H. T1 - Reactions of {Ru3(m-PPh2)(CO)9 }2(m3:m3-C4) with H+/H- or H2 to Yield Penta- and Hexa-Nuclear Cluster Compounds JF - Australian Journal of Chemistry JO - Aust. J. Chem. Y1 - 2001 VL - 54 IS - 5 SP - 325 EP - 327 KW - UR - https://doi.org/10.1071/CH01080 N2 - Addition of K[BHBus3] to {Ru3(µ-PPh2)(CO)9}2(µ3:µ3-C4) (1), followed by acidification, is proposed to give {Ru3H(µ-PPh2)(CO)9}2(µ3:µ3-C=CHCH=C) (2), in which hydrogen atoms have added to each cluster unit and to the C4 fragment of (1) to give a bis(vinylidene) ligand. The osmium analogue has also been prepared. In contrast, the reaction with dihydrogen results in the pentanuclear complex Ru3{µ3:µ-C2C2[Ru2(µ-PPh2)(CO)6]}(µ- PPh2)(CO)9 (3), by cleavage of an Ru(CO)3 fragment from (1). ER -