
TY  - JOUR
A1  - Bruce, MI 
A1  - Wallis, RC 
T1  - Cyclopentadienyl-ruthenium and-Osmium Chemistry. IX. Some Substituted &#951;<sup>1</sup>-Vinylidene and &#951;<sup>1</sup>-Acetylide Complexes
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1979
VL  - 32
IS  - 7
SP  - 1471
EP  - 1485
KW  - 
UR  - https://doi.org/10.1071/CH9791471 
N2  - Reactions between RUCI(PPh3)2(&#951;-C5H5), RuCI(L2)(&#951;-C5H5)(L2 = dppm or dppe) or OsBr(PPh3)2-(&#951;-C5H5) and the alk-1-ynes HC2R (R = Me, Pr, CO2Me, Ph, C6H4F-p or C6F5), in the presence of NH4PF6, NH4BF4 or NaBPh4, have given the corresponding cationic &#951;1-vinylidene complexes [Ru(C=CHR)(PPh3)2(&#951;-C5H5)]+,[Ru(C=CHPh)(L2)(&#951;-C5H5)]+ or [Os(C=CHP~)(PPh3)2(&#951;-C5H5)]+. These cations are readily deprotonated to give the corresponding &#951;1-ethynyl derivatives Ru(C2R)-(PPh3)2(&#951;-C5H5), Ru(C2Ph)(L2)(&#951;-C5H5) or OS(C2Ph)(PPh3)2(&#951;-C5H5). Addition of HPF6 or [R'3O]PF6 (R' = Me or Et) to the latter affords the vinylidene complexes containing C=CHR and C=CRR' ligands (R = Me, Pr, CO2Me, Ph, C6H4F-p or C6F5; R' = Me or Et), respectively. The vinylidene complexes are characterized by &#957;(CC) bands at c. 1650 cm-1 and the metal-bonded carbon (13C) resonance at c. 360 ppm. 
ER  -

