Silane, tetrabromo- supplier

Name
SILICON TETRABROMIDE
EINECS 232-182-4
CAS No. 7789-66-4
Article Data43
CAS DataBase
Density 2.971 g/cm³
Solubility decomposed in water to HBr, silicic acid, with evolution of heat [MER06]
Melting Point 5 °C(lit.)
Formula Br₄Si
Boiling Point 154 °C at 760 mmHg
Molecular Weight 347.702
Flash Point 154°C
Transport Information UN 3264 8/PG 2
Appearance
Safety 26-27-28-36/37/39
Risk Codes 34
Molecular Structure
Hazard Symbols C
Synonyms Siliconbromide (SiBr4) (6CI,8CI);Perbromosilane;Silicon bromide;Silicontetrabromide;Tetrabromosilane;Silicon bromide; Silicon bromide (SiBr4); Silicon tetrabromide;silicon tetrabromide;
PSA 0.00000
LogP 3.00160

Synthetic route

: 10581-00-7
phenyltribromosilane

: 10035-10-6, 12258-64-9
hydrogen bromide

: 7789-66-4
tetrabromosilane

Conditions

Conditions	Yield
With aluminum tri-bromide In benzene byproducts: PhH; 12 h, room temp.; 5-6 h, 70°C; distn.;	99.4%

: 7440-21-3
silicon

A: 4072-00-8
Diphenyldibromsilan

B: 10581-00-7
phenyltribromosilane

C: 7789-66-4
tetrabromosilane

Conditions

Conditions	Yield
With C6H5Br; copper In neat (no solvent) Si-Cu (8:2) and C6H5Br at about 420°C;;	A 27% B 42% C 13%

...Expand

: 10026-04-7, 53609-55-5
tetrachlorosilane

: 87-82-1
hexabromobenzene

A: 7789-66-4
tetrabromosilane

B: 13465-75-3
dibromo dichlorosilane

C: 13465-74-2
bromo trichloro silane

D: 13465-76-4
chloro tribromo silane

Conditions

Conditions	Yield
In gas High Pressure; reagents added to tube in dry ice bath, sealed in amts. to develop about 30-50 atm of pressure at 300°C, heated at 310-350°C for 1.5-69 h; analyzed by GLC;

...Expand

: silver(I) bromide

: 7440-21-3
silicon

: 7789-66-4
tetrabromosilane

Conditions

Conditions	Yield
above m.p. of AgBr in vac.;

: 10035-10-6, 12258-64-9
hydrogen bromide

: 7440-21-3
silicon

A: 7789-57-3
tribromosilane

B: 7789-66-4
tetrabromosilane

Conditions

Conditions	Yield
340-360 °C;
340-360 °C;
In neat (no solvent) moderate heating of Si in a dry HBr stream;;
In neat (no solvent) heating of Si in a HBr stream below red heat;; fractional distillation;;

...Expand

Cu(b),Si(10) (X%): Cu(b),Si(10) (X%)

: 10035-10-6, 12258-64-9
hydrogen bromide

A: 7789-57-3
tribromosilane

B: 7789-66-4
tetrabromosilane

...Expand

: 593-95-3
carbonyl dibromide

: 112926-00-8, 7631-86-9
silica gel

: 7789-66-4
tetrabromosilane

Conditions

Conditions	Yield
In neat (no solvent) byproducts: Si2OBr6, bromine, carbon monoxide; >1000 K;

Cu(20),Si(80) (X%): Cu(20),Si(80) (X%)

: 10035-10-6, 12258-64-9
hydrogen bromide

A: 7789-57-3
tribromosilane

B: 7789-66-4
tetrabromosilane

...Expand

: 13465-74-2
bromo trichloro silane

A: 10026-04-7, 53609-55-5
tetrachlorosilane

B: 7789-66-4
tetrabromosilane

Conditions

Conditions	Yield
In neat (no solvent) passing SiBrCl3 through a tube, heated at 600 °C;;
In neat (no solvent) passing SiBrCl3 through a tube, heated at 600 °C;;

: 13465-74-2
bromo trichloro silane

: 13465-76-4
chloro tribromo silane

A: 10026-04-7, 53609-55-5
tetrachlorosilane

B: 7789-66-4
tetrabromosilane

Conditions

Conditions	Yield
In neat (no solvent) passing a mixture of SiBrCl3 and SiBr3Cl through a tube, heated at 600 °C;;
In neat (no solvent) passing a mixture of SiBrCl3 and SiBr3Cl through a tube, heated at 600 °C;;

...Expand

: 13966-66-0
difluorosilylene

: 7726-95-6
bromine

: 7783-61-1
silicon tetrafluoride

A: 14049-39-9
bromotrifluorosilane

B: 14188-35-3
difluoro dibromosilane

C: 18356-67-7
fluoro tribromosilane

D: 13517-13-0
disilicon hexabromide

E: 7789-66-4
tetrabromosilane

Conditions

Conditions	Yield
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;;

...Expand

: 7726-95-6
bromine

: 7440-21-3
silicon

: 7789-66-4
tetrabromosilane

Conditions

Conditions	Yield
In neat (no solvent) passing of a N2 stream with Br2 vapor over crystalline Si which is heated at 1000°C;; removal of Br2 by heating and shaking with Hg;;	>99
In neat (no solvent) passing of a N2 stream with Br2 vapor over crystalline Si which is heated at 1000°C;; removal of Br2 by heating and shaking with Hg;;	>99
In neat (no solvent) removal of Br2 by shaking with Hg; purification by fractional distillation;;
Inert atmosphere;

: 7726-95-6
bromine

: 7782-50-5
chlorine

: 7440-21-3
silicon

A: 7789-66-4
tetrabromosilane

B: 13465-75-3
dibromo dichlorosilane

C: 13465-74-2
bromo trichloro silane

D: 13465-76-4
chloro tribromo silane

Conditions

Conditions	Yield
In neat (no solvent) passing a mixture of Cl2 and Br2 over metallic Si at 700°C;; fractional distillation;;

...Expand

: 7726-95-6
bromine

: 13465-84-4
silicon tetraiodide

A: 13536-76-0
tribromo iodosilane

B: 7789-66-4
tetrabromosilane

Conditions

Conditions	Yield
In carbon disulfide
In neat (no solvent)
In carbon disulfide

...Expand

: 7726-95-6
bromine

: 7440-21-3
monosilane

A: 7789-57-3
tribromosilane

B: 14791-57-2
silyl bromide

C: 13768-94-0
dibromosilane

D: 10035-10-6, 12258-64-9
hydrogen bromide

E: 7789-66-4
tetrabromosilane

Conditions

Conditions	Yield
In neat (no solvent) reaction of Br2 and excess SiH4; cooling;; fractionation;;
In neat (no solvent) reaction of Br2 and excess SiH4; cooling;; fractionation;;

...Expand

Fe(b),Si(75) (X%): Fe(b),Si(75) (X%)

: 7726-95-6
bromine

A: 13517-13-0
disilicon hexabromide

B: 7789-66-4
tetrabromosilane

Conditions

Conditions	Yield
In neat (no solvent) byproducts: HBr; heating of ferrosilicon with 25% Fe in a N2 stream with Br2 vapor in a porcelaine tube at 800-850°C;; removal of Br2 by shaking with Hg; isolation by fractional distillation and condensation in vacuum;;

...Expand

: 7726-95-6
bromine

: 112926-00-8, 7631-86-9
silica gel

A: 7789-66-4
tetrabromosilane

B: 13465-76-4
chloro tribromo silane

Conditions

Conditions	Yield
With C In neat (no solvent) treatment of a mixture of SiO2 and C with crude Br2 at higher temp.;; fractionation;;

...Expand

: 7726-95-6
bromine

: 112926-00-8, 7631-86-9
silica gel

: 7789-66-4
tetrabromosilane

Conditions

Conditions	Yield
With oil; Sucrose In neat (no solvent) passing of Br2 vapor over the mixture at glowing heat;; removal of Br2 by shaking with Hg; purification by distillation;;
With carbon monoxide In neat (no solvent) byproducts: carbon dioxide; addn. of SiO2, CO (22-28 kP) and Br2 (27-40 kP) into ampoule, reactn. at 837 K (24 h); detn. of SiBr4 after heating the evacuated ampoule at >1173 K;
With carbon monoxide In neat (no solvent) byproducts: carbon dioxide; addn. of SiO2, CO (22-28 kP) and Br2 (27-40 kP) into ampoule, reactn. at >1173 K (24 h); no detn. of COBr2 in vapour phase;
With C In neat (no solvent) passing of Br2 vapor over the mixture at glowing heat;; removal of Br2 by passing H2 through the crude bromide on heating; shaking with Hg and fractional distillation;;
With soot; sugar; oil In neat (no solvent) passing of Br2 vapor over the mixture at glowing heat;; removal of Br2 by shaking with Hg; purification by distillation;;

: 7789-57-3
tribromosilane

A: 7789-66-4
tetrabromosilane

B: 7440-21-3
silicon

Conditions

Conditions	Yield
In neat (no solvent) byproducts: H2; decompn. above 700 °C;;
In neat (no solvent) byproducts: H2; decompn. above 700 °C;;

: 7787-70-4
copper(I) bromide

: 7440-21-3
silicon

: 7789-66-4
tetrabromosilane

Conditions

Conditions	Yield
In neat (no solvent)
In neat (no solvent)

: silica

: beryllium bromide

: 7789-66-4
tetrabromosilane

Conditions

Conditions	Yield
In neat (no solvent) byproducts: BeO; reaction of BeBr2 with quartz glass at high temp.;;

: 10035-10-6, 12258-64-9
hydrogen bromide

: 7440-21-3
silicon

A: 7789-57-3
tribromosilane

B: 14791-57-2
silyl bromide

C: 13768-94-0
dibromosilane

D: 7789-66-4
tetrabromosilane

Conditions

Conditions	Yield
In neat (no solvent)
In neat (no solvent) reaction of crystalline Si with gaseous HBr at 340-700 °C; yields depend on the reaction temperature;;	A n/a B <1 C n/a D n/a
In neat (no solvent)
In neat (no solvent) reaction of crystalline Si with gaseous HBr at 340-700 °C; yields depend on the reaction temperature;;	A n/a B <1 C n/a D n/a

...Expand

: 10035-10-6, 12258-64-9
hydrogen bromide

: 7440-21-3
silicon

A: 13842-48-3
silicon tribromide

B: 7789-66-4
tetrabromosilane

Conditions

Conditions	Yield
In neat (no solvent) reaction at temperatures between 340 und 360 °C;;
In neat (no solvent) reaction at temperatures between 340 und 360 °C;;
In neat (no solvent) reaction at temperatures between 340 und 360 °C;;

...Expand

Silane, tetrabromo- Specification

The Silane, tetrabromo-, with the CAS registry number 7789-66-4 and EINECS registry number 232-182-4, has systematic name of tetrabromosilane. It belongs to the product category of Pharmacetical. And the molecular formula of the chemical is Br₄Si.

The characteristics of Silane, tetrabromo- are as followings: (1)ACD/LogP: 5.86; (2)# of Rule of 5 Violations: 1; (3)ACD/LogD (pH 5.5): 5.86; (4)ACD/LogD (pH 7.4): 5.86; (5)ACD/BCF (pH 5.5): 16712.71; (6)ACD/BCF (pH 7.4): 16712.71; (7)#H bond acceptors: 0; (8)#H bond donors: 0; (9)#Freely Rotating Bonds: 0; (10)Polar Surface Area: 0 Å²; (11)Index of Refraction: 1.631; (12)Molar Refractivity: 41.69 cm³; (13)Molar Volume: 116.9 cm³; (14)Polarizability: 16.52×10^-24cm³; (15)Surface Tension: 43.1 dyne/cm; (16)Density: 2.971 g/cm³; (17)Enthalpy of Vaporization: 37.9 kJ/mol; (18)Boiling Point: 154 °C at 760 mmHg; (19)Vapour Pressure: 4.17 mmHg at 25°C.

You should be cautious while dealing with this chemical. It may cause burns. Therefore, you had better take the following instructions: Wear suitable protective clothing, gloves and eye/face protection; Take off immediately all contaminated clothing; After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer); In case of contacting with eyes, rinse immediately with plenty of water and seek medical advice.

Addtionally, the following datas could be converted into the molecular structure:
(1)SMILES: Br[Si](Br)(Br)Br
(2)InChI: InChI=1/Br4Si/c1-5(2,3)4
(3)InChIKey: AIFMYMZGQVTROK-UHFFFAOYAY

Product Name

SILICON TETRABROMIDE

Synthetic route

Silane, tetrabromo- Specification

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