DIPHENYLDIFLUOROSILANE Chemical Properties

Boiling point:

159°C 50mm

Density 

1.145

refractive index 

1.522

Flash point:

87°C

storage temp. 

under inert gas (nitrogen or Argon) at 2-8°C

solubility 

soluble in ether.

Specific Gravity

1.145

Hydrolytic Sensitivity

8: reacts rapidly with moisture, water, protic solvents

CAS DataBase Reference

312-40-3(CAS DataBase Reference)

EPA Substance Registry System

Silane, difluorodiphenyl- (312-40-3)

Safety Information

Hazard Codes 

C

Risk Statements 

34

Safety Statements 

26-36/37/39-45

RIDADR 

1760

Hazard Note 

Corrosive

TSCA 

Yes

HS Code 

2931900090

DIPHENYLDIFLUOROSILANE Usage And Synthesis

Physical properties

bp 246–247 °C, bp 156°C50 mmHg, bp 66–70°C0.5 mmHg; d 1.155 g cm?1.

Uses

A moisture insensitive equivalent of diphenyldichlorosilane that is more reactive toward nucleophiles. Source of phenyl group in the Hiyama coupling reaction. More stable to electrophilic aromatic substitution than diphenyldichlorosilane.
Eaborn reported that fluorosilanes are more reactive toward organometallic reagents than the corresponding chlorosilanes, and therefore more suited for preparation of sterically hindered organosilanes.

Preparation

commercially available. Readily prepared by oxidation of diphenylsilane with CuF2, or by treatment of diphenyldichlorosilane with HF, ZnF2, NaBF4, or (NH4)2SiF6. Rate enhancements of the chlorine–fluorine exchange have been achieved with ultrasound and addition of water. Diethoxydiphenylsilane and related structures are converted to diphenyldifluorosilane with 48% HF(aq).

DIPHENYLDIFLUOROSILANE(312-40-3)Related Product Information

• Dimethicone
• 2-Chlorobenzoic acid
• Diphenylsilanediol
• DIPHENYLDIFLUOROSILANE SEE...DIFLUORODIPHENYLSIL
• DIMETHYLDIFLUOROSILANE
• Diphenylsilane
• DIPHENYLDIFLUOROSILANE
• DIMETHYLFLUOROSILANE
• METHYLDIFLUOROSILANE
• Tetrabutylammonium Difluorotriphenylsilicate