Polycarbon ligands: Synthesis and characterization of the phosphinodiynes Ph2PC≡C-C≡CR (R = But, Ph, SiMe3),the μ-η1,η2α, β-butadiynyl complexes Ru2(CO)6-(μ-PPh 2

Article abstract of DOI:10.1139/v96-262

The phosphino-diynes (PPh₂C≡C-C≡CR) (R = Bu^t, Ph, SiMe₃) are obtained in excellent yield from the corresponding diyne anions RC≡C-C≡C^- by quenching with PPh₂Cl. Monosubstitution on Ru₃(CO)<