123676-35-7

Upstream product

• 15226-74-1 dicobalt octacarbonyl 
• 42591-53-7 chloromethyl(phenylethynyl)silane 

Downstream Products

• 122627-07-0 (dicobalt)(carbonyl)6(dimethyl(phenylethynyl)silane) 
• 123676-34-6 (Me){(η2-CCPh)Co2(CO)6}Si(OMe)2 
• 12154-91-5 (phenylacetylene)hexacarbonyldicobalt 
• 129469-55-2 (Me)(PhCC)Si(H){(η2-CCPh)Co2(CO)6} 
• 129469-54-1 (Me){(η2-CCPh)Co2(CO)6}Si(OH)2 
• 129469-57-4 (Me){(η2-CCPh)Co2(CO)6}Si(OEt)2 
• 138033-46-2 {{(η(2)-CCC6H5)Co2(CO)6}{(Me)Si(H)}}2O 
• 127881-21-4 Co₂(CO)6(C(C₆H₅)CSi(CH₃)(OH)OCH₂C₆H₅) 

Relevant academic research and scientific papers

Zur Umsetzung von Chlor-Methyl-Phenylethinyl-Silan mit Octacarbonyldicobalt; Reaktivitaetsstudien an 2-CCPh)Co2(CO)6>(Me)Si(H)(Cl)

(Me)(PhCC)Si(H)(Cl) (I) reacts selectively with Co2(CO)8 (II) to yield the η2-side-on coordinated compound (Me)(H)(Cl)Si2-CCPh)Co2(CO)6> (III).Treatment of III with 0.5 mol of Co2(CO)8 yields the complex (Me)(Cl)Si(ηsup

Alkinyl-substituierte Chlorsilane als Clusterbausteine

The reaction of phenylethynyl-substituted chlorosilanes with dicobaltoctacarbonyl is discussed.Co2(CO)8 (II) yields selectively with (R)(PhCC)Si(H)(Cl) (R = Me: I; R = CCPh: V) (R)2-CCPh)Co2(CO)6>Si(H)(Cl) (R = Me: III; R = CCPh: VI), in which the phenylethynyl group is η2 side-on co-ordinated to "Co2(CO)6".III affords with further Co2(CO)8 under oxidative addition (Me)2-CCPh)Co2(CO)6>Si(Cl) (IV); IV may also be obtained directly by the reaction of I with 1.5 equivalents of II.VI contains a non-coordinated CCPh group and yields with one equivalent of II the tetranuclear complex 2-CCPh)Co2(CO)6>2Si(H)(Cl) (VII) in which the two CCPh ligands form sterically-hindered carbon-cobalt tetrahedrane cluster units.Compounds VIII and X show the same reaction behaviour as I and V: (R)(PhCC)Si(Cl)2 (R = Ph:VIII; R = H:X) reacts with one equivalent of II to yield in the first step (R)2-CCPh)Co2(CO)6>Si(Cl)2 (R = Ph:IX; R = H:XI).Addition of 0.5 parts of II to XI affords in high yields complex 2-CCPh)Co2(CO)6>Si(Cl)2 (XII).In a similar manner, compound (Me)(PhCC)Si(H)2 (XIII) yields with one equivalent of II the dinuclear complex (Me)2-CCPh)Co2(CO)6>Si(H)2 (XIV) which slowly decompose to form oligomeric compounds as well as (η2-PhCCH)Co2(CO)6 (XV).All new compounds were characterized by analytical and spectroscopic data (IR, 1H, 13C NMR, MS), and (Me)2-CCPh)Co2(CO)6>Si(Cl) (IV) by X-ray analysis.

Cobalt carbonyl complexes of functional ethynylsilanes. Reactivity at the silicon atom

The reaction of various functional ethynylsilanes with dicobalt octacarbonyl was found to give the corresponding acetylene-cobalt carbonyl complexes. The reaction of Co2(CO)8 proceeded selectively at the triple bond of most ethynylhydrosilanes. Cobalt complexes of ethynylsilanes having Si-H, Si-OR, Si-Cl, and Si-Co(CO)4 bonds were obtained. The reactivity at the silicon atom in some of these complexes was studied. Reduction, alcoholysis, and aminolysis reactions were performed successfully. The reactions of strong nucleophiles such as organolithium or Grignard reagents led mainly to decomposition products. Some reactions of complexes of bis(silyl)acetylenes also were examined, and a few coordinated silacycloalkynes were isolated.