CHI-JUNG SU2026-10-162026-10-161998-03-21Pure ID: 15444008Pure UUID: 3da241e7-8e34-4f8e-9086-46f109913c4210.1039/a708030ahttps://www.scopus.com/pages/publications/33748509309https://scholars.csmu.edu.tw/handle/123456789/23277Reactions of the phosphinidene cluster [Ru4(CO)13(μ3-PPh)] with tungsten acetylide complexes [WL(CO)3(CCPh)] (L = C5Me5 or C5H5) gave interconvertible isomers of formula [Ru4(CO)10(μ4-PPh)(CCPh){WL(CO)}]. The structures of the two C5Me5 derivatives were determined by X-ray diffraction, showing a novel WRu4P octahedral core arrangement, in which the acetylide ligand is co-ordinated to a WRu2 triangle with its C-C vector bridging the Ru-Ru edge. For one isomer the phosphinidene ligand is located at the position trans to the W atom, while in the second isomer it is at the cis position. Possible mechanisms for this rare example of skeletal isomerization are suggested.4enjournal article