Chemistry of Polynuclear Metal Complexes with Bridging Carbene or Carbyne Ligands. Part 82.' Dimetallic Compounds prepared from the Complexes [MR2(η-C5H5)2](R = Cl or Bun; M = Ti or Zr)

Hill, Anthony F.Hönig, Heike D.Stone, F. Gordon A.2026-01-122026-01-121472-7773ORCID:/0000-0003-2167-0604/work/167652075WOS:A1988R724600018https://hdl.handle.net/1885/733804088The bis(cyclopentadienyl)metal dihalides [MCl2(η-C5H5)2] (M = Ti or Zr) are reduced by magnesium amalgam in tetrahydrofuran in the presence of the alkylidyne-tungsten complexes [W(≡CR)(CO)2(η-C5H5)] (R = C6H4Me-4 or C6H4OMe-2) to afford the dimetal compounds [MW(μ-CR)(μ-σ:η2-CO)(CO)(η-C5H 5)3]. Alternatively, the reagents [M(Bun)2(η-C5H5)2] (M = Ti or Zr), prepared in situ in diethyl ether, react with the complexes [M′(≡CR)(CO)2(η-C5H5)] (M = Ti, M′ = W, R = C6H4Me-4 or C6H4OMe-2; M = Zr, M′ = W, R = Me, C6H4Me-4,C6H4OMe-2, or C6H3Me2-2,6; M′ = Mo, R = C6H4OMe-2) to give the compounds [MM′(μ-CR)(μ-σ:η2-CO)(CO)(η-C 5H5)3] in high yield. The n.m.r. data for the new complexes are reported and discussed.4enChemistry of Polynuclear Metal Complexes with Bridging Carbene or Carbyne Ligands. Part 82.' Dimetallic Compounds prepared from the Complexes [MR2(η-C5H5)2](R = Cl or Bun; M = Ti or Zr)198810.1039/dt988000303137049067133