812-28-2

Basic information

• Product Name: 1,1,1,2,2,3,3-Heptamethyltrisilane
• Synonyms: 1,1,1,2,2,3,3-Heptamethyltrisilane
• CAS NO: 812-28-2
• Molecular Formula: C₇H₂₂Si₃
• Molecular Weight: 190.51
• Mol File: 812-28-2.mol
• Article Data: 4

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 1,1,1,2,2,3,3-Heptamethyltrisilane(CAS DataBase Reference)
• NIST Chemistry Reference: 1,1,1,2,2,3,3-Heptamethyltrisilane(812-28-2)
• EPA Substance Registry System: 1,1,1,2,2,3,3-Heptamethyltrisilane(812-28-2)

Safety Data

• Hazardous Substances Data: 812-28-2(Hazardous Substances Data)

Usage

Type of compound

Trisilane (organosilicon compound with three silicon atoms)

Physical state

Colorless, flammable liquid

Odor

Strong, unpleasant

Primary use

Reagent in various chemical reactions

Additional uses

a. Synthesis of other organosilicon compounds
b. Precursor in the production of silicon-based materials
c. Potential applications in the semiconductor industry
d. Hydrogen source in fuel cells

Safety precautions

Handle with care and caution due to hazardous nature

Health and environmental risks

Potential risks associated with improper handling or exposure

Upstream product

• 812-15-7 1,1,1,2,2-pentamethyldisilane 
• 993-07-7 trimethylsilan 
• 75-78-5 dimethylsilicon dichloride 
• 4098-30-0 dodecamethylcyclohexasilane 

Downstream Products

• 253185-03-4 tert-butylbenzene 
• 538-93-2 1-phenyl-2-methylpropane 

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).

GAS-PHASE PHOTOCHEMICAL REACTIONS OF DODECAMETHYLCYCLOHEXASILANE WITH SILICON COMPOUNDS. KINETICS OF SOME INSERTION REACTIONS OF DIMETHYLSILYLENE

Attempts to measure the kinetics of gas-phase insertion reactions of dimethylsilylene, generated by photolysis of dodecamethylcyclohexasilane, are described.Insertion of dimethylsilylene into silicon-hydrogen bonds was the main reaction with trimethylsilane, pentamethyldisilane, and sym-tetramethyldisilane; in all cases the activation energy for insertion was zero, and the rate constants were in the ratio of 1:3.1:4.3.Dimethylsilylene also inserted cleanly into hydrogen chloride with an activation energy of 28 kJ mol-1.Photochemical reactions with methylchlorosilanes were much more complex, involving little or no silylene chemistry; such reactions as did occur appeared to proceed almost entirely by radical mechanisms.