Alkyne Ligands as Two-Electron Donors in Octahedral d6 Tungsten(0) Complexes fac-W(CO)3(dppe)(ν2-HC=-CR) and W(CO)2(dppe)(DMAC)2

Article abstract of DOI:10.1021/ja00239a021

Three labile terminale alkyne adducts of tungsten(0), fac-W(CO)3(dppe)(ν²-HC=-CR) (dppe=Ph2PCH2CH2PPh2; R=H, n-Bu, and Ph) have been synthesized from fac-W(CO)3(dppe)(acetone).Chemical and spectroscopic properties indicate that the alkyne ligan