Pentamethyldisilane

Base Information

• Chemical Name: Pentamethyldisilane
• CAS No.: 812-15-7
• Molecular Formula: C5H16Si2
• Molecular Weight: 132.353
• European Community (EC) Number: 623-033-8
• DSSTox Substance ID: DTXSID201001837
• Nikkaji Number: J688.259E
• Mol file: 812-15-7.mol

Synonyms:Pentamethyldisilane;PENTAMETHYLDISILANE97;(CH3)3SiSiH(CH3)2;FHQRQPAFALORSL-UHFFFAOYSA-N;DTXSID201001837;1,1,1,2,2-Pentamethyldisilane #;AKOS015916088;1,1,2,2,2-Pentamethyldisilanyl radical

Chemical Property of Pentamethyldisilane

Chemical Property:

• Vapor Pressure: 43.8mmHg at 25°C
• Refractive Index: n20/D 1.4240(lit.)
• Boiling Point: 99.6 °C at 760 mmHg
• Flash Point: 14 °C
• PSA: 0.00000
• Density: 0.722 g/mL at 25 °C(lit.)
• LogP: 1.88970
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 0
• Rotatable Bond Count: 1
• Exact Mass: 131.07122855
• Heavy Atom Count: 7
• Complexity: 51.6

Purity/Quality:

98%,99%, ^*data from raw suppliers

Pentamethyldisilane 97% ^*data from reagent suppliers

Safty Information:

• Pictogram(s): F
• Hazard Codes: F
• Statements: 11
• Safety Statements: 16-33-7/9

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Canonical SMILES: C[Si](C)[Si](C)(C)C

Technology Process of Pentamethyldisilane

There total 3 articles about Pentamethyldisilane which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 25.0%

1-methyl-1-silacyclobutane (765-33-3) + trimethylsilan (993-07-7) → ethene (74-85-1) + 1,1,1,2,2-pentamethyldisilane (812-15-7) + 1,1-dimethyl-1,3-disilacyclobutanes (38512-90-2) + 1,3-dimethyl-1,3-disilacyclobutane (1628-01-9)

Guidance literature:

at 652 ℃;

DOI:10.1021/ja00397a046

Reference yield:

trimethylsilan (993-07-7) + dodecamethylcyclohexasilane (4098-30-0) → 1,1,1,2,2-pentamethyldisilane (812-15-7) + 1,1,2,2-tetramethyldisilane (814-98-2) + 1,3-dihydro-1,1,2,2,3,3-hexamethyltrisilane (813-43-4) + heptamethyltrisilane (812-28-2)

Guidance literature:

at 141.4 ℃; for 0.5h; under 46 Torr; Product distribution; Mechanism; Irradiation; var. temp.; other silicon compounds;

DOI:10.1016/S0022-328X(00)83467-1

Reference yield:

trimethylsilan (993-07-7) + dimethylsilicon dichloride (75-78-5,30107-43-8) → 1,1,1,2,2,2-hexamethyldisilane (1450-14-2) + methylsilane (992-94-9) + 1,1,1,2,2-pentamethyldisilane (812-15-7) + heptamethyltrisilane (812-28-2) + 1,1,1,2,2,3,3,4,4-nonamethyltetrasilane (56240-58-5) + C11H34Si5 (79107-95-2)

Guidance literature:

With K/Na alloy; at 250 - 300 ℃; under 200 - 555 Torr; Product distribution; formation of dimethylsilylene, its gas-phase reactions with trimethylsilane and ethylene, insertion and free-radical processes;

upstream raw materials:

1-methyl-1-silacyclobutane

trimethylsilan

dodecamethylcyclohexasilane

dimethylsilicon dichloride

Downstream raw materials:

pentamethyldisilyl radical

tert-butyl alcohol

dimethylmonochlorosilane

trimethylsilan

Refernces

• 1、 Davidson, Iain M.T.,Ostah, Naaman A.. "GAS-PHASE PHOTOCHEMICAL REACTIONS OF DODECAMETHYLCYCLOHEXASILANE WITH SILICON COMPOUNDS. KINETICS OF SOME INSERTION REACTIONS OF DIMETHYLSILYLENE". . p. 149 - 158. Retrieved 2007/10/02.