Coupling reaction between the uncoordinated acetylenic bond of [Ru3(CO)10{μ3-FcC2CCFc}] and FcCCCCFc to form [Ru2(CO)6{C4Fc2(CCFc)2}2], [Ru2(CO)6[μ-η1:η1:η2:η2-{FcCCCC(Fc)–C(O)–C(Fc)CCCFc}] and [Ru2(CO)6[μ-η1:η1: η2:η2-{FcCCCC(Fc)–C(O)–C(–CCFc)C(Fc)}]

Crystal structure of [μ-1κ2 C 1,C 4:2(1,2,3,4-η)-1,2,3,4-tetraphenylbuta-1,3-diene-1,4-diyl]bis(tricarbonylosmium)(Os—Os)

“…one in which the carbonyl ligands of the M 2 (CO) 6 units are eclipsed in a so-called sawhorse conformation, or one in which the carbonyls are staggered with one CO semibridging the metal-metal bond. Ferroles (M = Fe) almost always adopt the staggered non-sawhorse conformation (Kumar et al, 2014;Iyoda et al, 1997;Jeannin et al, 1994;Heim et al, 1992;Daran & Jeannin, 1984), while ruthenoles (M = Ru) display an equal propensity to adopt either the sawhorse or the nonsawhorse conformation (Yang, 2014;Mathur et al, 2008Mathur et al, , 2014Tunik et al, 1997). Only two osmole (M = Os) complexes have been examined by X-ray crystallographic analysis, and both of them exhibit the sawhorse conformation.…”

Synthesis of Novel Allene-Coordinated, Phosphido-Bridged Ru2Pt Clusters Involving Enyne to Allene Transformation

“…A widely used strategy for the synthesis of hydrocarbyl-containing metal carbonyl clusters is the condensation of polyyne complexes with coordinatively unsaturated metal fragments, which may be followed by metal–metal bond formation and eventual cluster formation . The reactivity of 1,3-diynes has been well explored with different metal carbonyls: in particular, those of W, Fe, Ru, Os, and Co . Sometimes, useful organic transformations are also observed in such reactions .…”