%0 Journal Article %A Adams, Chris J. %A Bruce, Michael I. %A Humphrey, Paul A. %A Skelton, Brian W. %A White, Allan H. %T Reactions of {Ru3(m-PPh2)(CO)9 }2(m3:m3-C4) with H+/H- or H2 to Yield Penta- and Hexa-Nuclear Cluster Compounds %J Australian Journal of Chemistry %D 2001/11/29 %V 54 %N 5 %P 325-327 %K %R https://doi.org/10.1071/CH01080 %U https://www.publish.csiro.au/paper/CH01080 %X 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).