Hexafluorodisilane

Base Information

• Chemical Name: Hexafluorodisilane
• CAS No.: 13830-68-7
• Molecular Formula: F6Si2
• Molecular Weight: 170.161
• DSSTox Substance ID: DTXSID70160564
• Nikkaji Number: J627.961I
• Wikipedia: Hexafluorodisilane
• Wikidata: Q18211432
• Mol file: 13830-68-7.mol

Synonyms:Hexafluorodisilane;13830-68-7;trifluoro(trifluorosilyl)silane;Si2F6;Hexafluordisilan;DTXSID70160564

Chemical Property of Hexafluorodisilane

Chemical Property:

• Vapor Pressure: 3350mmHg at 25°C
• Melting Point: -18.5°C sub.
• Refractive Index: 1.243
• PSA: 0.00000
• Density: 1.282 g/cm³
• LogP: 1.75960
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 6
• Rotatable Bond Count: 0
• Exact Mass: 169.94427204
• Heavy Atom Count: 8
• Complexity: 61.5

Purity/Quality:

99% ^*data from raw suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

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

Technology Process of Hexafluorodisilane

There total 4 articles about Hexafluorodisilane 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: 60.0%

potassium fluoride (7789-23-3) + disilicon hexabromide (13517-13-0) → disilicon hexafluoride (13830-68-7) + silicon tetrafluoride (7783-61-1)

Guidance literature:

In 1,2-dichloro-ethane; acetonitrile; Si2Cl6 dissolved in C2H4Cl2 added dropwise over 2 h to suspn. of KF in boiling MeCN, allowed to reflux for 30 min in slow stream of N2; gaseous products trapped in cooled (liq. N2) trap, anlyzed by IR;

DOI:10.1246/bcsj.58.1867

Reference yield: 45.0%

potassium fluoride (7789-23-3) + hexachlorodisilane (13465-77-5) → hydrogenchloride (7647-01-0,15364-23-5) + disilicon hexafluoride (13830-68-7) + silicon tetrafluoride (7783-61-1)

Guidance literature:

In 1,2-dichloro-ethane; acetonitrile; Si2Cl6 dissolved in C2H4Cl2 added dropwise over 2 h to suspn. of KF in boiling MeCN, allowed to reflux for 30 min in slow stream of N2; gaseous products trapped in cooled (liq. N2) trap, analyzed by IR;

DOI:10.1246/bcsj.58.1867

Reference yield:

difluorosilylene (13966-66-0) + chlorine (7782-50-5) + silicon tetrafluoride (7783-61-1) → ClF2SiSiF2Cl (108737-33-3) + Cl2FSiSiCl3 (18356-60-0) + F3SiSiCl3 (108737-34-4) + disilicon hexafluoride (13830-68-7) + hexachlorodisilane (13465-77-5)

Guidance literature:

In neat (no solvent); The halogen was co-condensed in a flask at -196°C with the mixt. of SiF4 and SiF2 emerging out of the reactor tube; further products;; warmed to room temp.; the volatile products were sepd. and detected by NMR and MS;;

DOI:10.1039/DT9870001123

upstream raw materials:

difluorosilylene

bromine

silicon tetrafluoride

chlorine

Downstream raw materials:

SiF₂I₂

silicon tetrafluoride

F₃SiSiH₃

trimethyl(trifluorsilyl)stannane

Refernces

• 1、 Suresh, Bettadapura Srinivasaiah,Padma, Doddaballapur Krishnamurthy. "Preparation of Hexafluorodisilane and Reactions of Hexafluorodisilane and Hexachlorodisilane with Sulfur Trioxide". . p. 1867 - 1868. Retrieved 2007/10/02.