79107-95-2

Basic information

• Product Name: Pentasilane, 1,1,1,2,2,3,3,4,4,5,5-undecamethyl-
• CAS NO: 79107-95-2
• Molecular Formula: C11H34Si5
• Molecular Weight: 306.818
• Mol File: 79107-95-2.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: Pentasilane, 1,1,1,2,2,3,3,4,4,5,5-undecamethyl-(CAS DataBase Reference)
• NIST Chemistry Reference: Pentasilane, 1,1,1,2,2,3,3,4,4,5,5-undecamethyl-(79107-95-2)
• EPA Substance Registry System: Pentasilane, 1,1,1,2,2,3,3,4,4,5,5-undecamethyl-(79107-95-2)

Safety Data

• Hazardous Substances Data: 79107-95-2(Hazardous Substances Data)

Upstream product

• 812-15-7 1,1,1,2,2-pentamethyldisilane 
• 993-07-7 trimethylsilan 
• 75-78-5 dimethylsilicon dichloride 

Relevant articles and documents

Synthesis, structure, and reactivity of hydridobis(silylene)ruthenium(IV)- xantsil complexes (xantsil = (9,9-dimethylxanthene-4,5-diyl)bis(dimethylsilyl)) - A stabilized form of key intermediates in the catalytic oligomerization- deoligomerization of hydrosilanes

Ru {K2(Si,Si)-xantsil}(CO)(η6-C6H 5CH3) (1) was found to be a catalyst for oligomerization-deoligomerization of HSiMe2SiMe3 to give H(SiMe2)nMe (n = 1-8 at 90°C for 2 days). Treatment of 1 with HSiMe2SiMe2OR (R = Me, f-Bu) led to quantitative formation of Ru{κ3(O,Si,Si)-xantsil}(CO)(H) {(SiMe2...O(R)...SiMe2)} (R = Me (2a), t-Bu (2b)), which also worked as a catalyst for oligomerization-deoligomerization of HSiMe2SiMe3. Based on these experimental results, a mechanism involving silyl(silylene) intermediates was proposed for the oligomerization-deoligomerization of HSiMe2SiMe3. Complex 2a reacted with MeOH in toluene-d8 to give Ru{κ 2(Si,Si)-xantsil}(CO)(η6-toluene-d8) and Me2Si(OMe)2 with evolution of H2. Under a CO atmosphere, 2a was smoothly converted to its CO adduct Ru{κ 2(Si-Si)-xantsil}(CO)2(H){(SiMe2...O(Me) ...SiMe2)} (3).

FORMATION AND REACTIONS OF DIMETHYLSILYLENE AND DIMETHYLGERMYLENE

-