4095-10-7

Basic information

• Product Name: dibromo(dimethyl)silane
• Synonyms: Dibromo(dimethyl)silane; silane, dibromodimethyl-
• CAS NO: 4095-10-7
• Molecular Formula: C₂H₆Br₂Si
• Molecular Weight: 217.9625
• Mol File: 4095-10-7.mol

Chemical Properties

• Boiling Point: 143.972°C at 760 mmHg
• Flash Point: 41.193°C
• Density: 1.763g/cm³
• Vapor Pressure: 6.543mmHg at 25°C
• Refractive Index: 1.486
• CAS DataBase Reference: dibromo(dimethyl)silane(CAS DataBase Reference)
• NIST Chemistry Reference: dibromo(dimethyl)silane(4095-10-7)
• EPA Substance Registry System: dibromo(dimethyl)silane(4095-10-7)

Safety Data

• Hazardous Substances Data: 4095-10-7(Hazardous Substances Data)

Upstream product

• 100-39-0 benzyl bromide 
• 86840-61-1 13,13-Dimethyl-1,10-diphenyl-13-silatricyclo<8.2.1.0^Δ2,9>trideca-11-en 
• 75-25-2 Bromoform 
• 18816-24-5 7,7-dimethyl-1,4,5,6-tetraphenyl-2,3-benzo-7-silanorbornadiene 
• 10536-62-6 di-(pentafluoro phenyl) dimethyl silane 
• 2857-97-8 trimethylsilyl bromide 
• 917-54-4 methyllithium 
• 7440-21-3 silicon 

Downstream Products

• 2857-97-8 trimethylsilyl bromide 
• 556-67-2 octamethylcyclotetrasiloxane 
• 107-51-7 octamethyltrisiloxabe 
• 141-62-8 decamethyltetrasiloxane 
• 5158-09-8 dicyanodimethylsilane 
• 2170-08-3 dimethylbis(phenylethynyl)silane 
• 74-96-4 ethyl bromide 
• 323200-11-9 2-bromo-7-phenyl-2,5,5,7-tetramethyl-2,5,7-trisilaoct-3-yne 
• 14760-11-3 2,2-dimethylpropane-1,3-diol cyclic dimethylsilyl ether 

Relevant articles and documents

Laser Pulse Photolysis of 7-Silanorbornadiene in Solution: Experimental and AM1 Studies of Complexation between Silylenes and CHBr3

The quantum yield (0.95 +/- 0.1) for the decomposition of 7,7-dimethyl-1,4,5,6-tetraphenyl-2,3-benzo-7-silanorbornadiene (Ib) in hexane at room temperature has been determined by the laser pulse photolysis technique.Reaction rate constants of the generated dimethylsilylene with bromoform (4.4 * 107 M-1 s-1) and Ib (5.7 * 109 M-1 s-1) have been measured.It is suggested that the reaction of Me2Si: with CHBr3 occurs via the formation of an intermediate complex (λmax = 338 nm, ε =1280 M-1 cm-1).The bimolecular rate constant for decay of the complex (2k = 1.61 * 109 M-1 s-1) has also been estimated.Semi-empirical PM3 calculations of the model reaction between the singlet SiH2 and CHBr3 show the formation at the first step of the reaction of a donor-acceptor complex stabilized by interactions between a vacant p-AO of SiH2 and a lone pair of one of the Br atoms.Such a complex should be rather stable both toward dissociation into the starting reagents (E = 23.3 kcal/mol) and further rearrangement into the insertion product, Br(H2)SiCHBr2 (E = 22.3 kcal/mol).

A simple one-pot synthesis of methyltribromosilane

A simple one-pot synthesis of methyltribromosilane has been developed. The straightforward reaction of a slight excess of silicon tetrabromide with one equivalent of powdered methyllithium in refluxing pentane produces methyltribromosilane in high yields.

Reactions of methyl(pentafluorophenyl)- and methyl(pentafluorophenyl)phenylsilanes with electrophiles. A convenient preparative route to halogeno(methyl)pentafluorophenylsilanes C6F5SiMe2X and C6F5SiMeX2 (X=F, Cl and Br)

Halogeno(methyl)pentafluorophenylsilanes C6F5SiMenX3-n (n=1, 2) (X=F, Cl, Br) were prepared in good yields from the corresponding phenylsilanes C6F5SiMenPh3-n by reactions with the electrophiles aHF, HCl-AlCl3, Br2-AlBr3 or AlX3 (X=Cl, Br) halogenated hydrocarbons. Additionally, reactions of C6F5SiMe3 and (C6F5)2SiMe2 with selected electrophiles were studied.

1H-CIDNP During an Insertion Reaction of Dimethylsilylenes

During the reaction of photochemically generated silylenes Me2Si: with benzyl bromide, 1H-CIDNP (chemically induced dynamic nuclear polarization) is observed in the radical abstraction-recombination product PhCH2-SiMe2Br formed from singlet states of Me2Si:.