ChemInform Abstract: Chemistry of Polynuclear Metal Complexes with Bridging Carbene or Carbyne Ligands. Part 60. Di- and Tri-Metal Compounds Prepared from the Metal Alkylidyne Complexes (W(CR)(CO)2(η-C5Me5)) (R: Me or C6H4Me-4) and (M(CR)(CO)2(HB(pz)3)) (M: Mo, R: C6H4Me-4; M: W, R: Me; HB(pz)3: Hydrotris(pyrazol-1-yl)borate).

ChemInform Abstract

Some new alkylidyne metal complexes (III) are prepared. Their reactions to give di- and tri-metal compounds are described. One of the CO ligands at the Fe in (VII) can be substituted by PMe₃, the new derivative is obtained with 75% yield. The reaction of (IIIb) with Pt(C₂H₄)(PMe₃)₂ is investigated, a complex analogous to that previously obtained with a unsubstituted cyclopentadienyl tungsten residue could not be isolated. The complexes (XVIb) are prepared from (IIIf) on reaction with Mo(CO)₃(NCMe)₃ or (XVII), respectively (yield 48 or 31%).