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1450-14-2 - Hexamethyldisilane, 98+% - A13155 - Alfa Aesar

A13155 Hexamethyldisilane, 98+%

Número CAS
1450-14-2
Nombre Alternativo

Tamaño Precio ($) Cantidad Disponibilidad
5g 24,60
25g 74,90
100g 263,00
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Hexamethyldisilane, 98+%

MDL
MFCD00008258
EINECS
215-911-0

Propiedades químicas

Fórmula
(CH3)3SiSi(CH3)3
Peso molecular
146.38
Punto de fusión
12-13°
Punto de ebullición
112-113°
Punto de inflamabilidad
-1°(30°F)
Densidad
0.721
Índice de refracción
1.4220
Solubilidad
Insoluble in water. Soluble in alcohol, ether and acetone.

Aplicaciones

Hexamethyldisilane acts as a silylating reagent for allylic acetates, aryl halides and diketones. It is a source material for vapor deposition during silicon carbide growth. It is also used in electronic and semiconducter industries.

Notas

Stable under recommended storage conditions. Incompatible with oxidizing agents, acids and bases.

Referencias documentales

B.Beagley; J.J.Monaghan; T.G.Hewitt. Electron-diffraction studies of tetramethylsilane and hexamethyldisilane, and discussion of the lengths of Si-C bonds. Journal of Molecular Structure. 1971, 8, (4),401-411

 

M.Simon; T.Lebrun; R.Martins; G.G.B. de Souza; I.Nenner; M.Lavollee; P.Morin. Multicoincidence mass spectrometry applied to hexamethyldisilane excited around the silicon 2p edge. J. Phys. Chem. 1993, 97, (20),5228-5237

Precursor of TMSLi, TMSNa and TMSK by cleavage with alkyllithiums or alkoxides. Reaction of the metallated derivatives with aryl halides gives aryltrimethylsilanes: J. Org. Chem., 42, 2654 (1977). The anion adds 1,4-to ɑß-enones to give ß-silyl ketones: J. Org. Chem., 41, 3063 (1976); Tetrahedron Lett., 24, 3497 (1983). The anion may also be used to deoxygenate secondary nitroalkanes (to ketoximes), nitrones (to imines), and heterocyclic N-oxides: J. Org. Chem., 64, 2211 (1999).

Also cleaved by TBAF to give the "salt-free" silyl anion, which adds to aldehydes to give, after acid hydrolysis, ɑ-hydroxy silanes: J. Org. Chem., 48, 912 (1983). TBAF also catalyzes the silylation of OH groups under very mild conditions: Tetrahedron Lett., 35, 8413 (1994). See Appendix 4.

Couples with aryl, benzyl or allyl halides in the presence of Tetrakis(triphenyl­phosphine)­palladium(0)­, 10548, to give the corresponding silanes: J. Organomet. Chem., 148, 97 (1978); 225, 331 (1982).

Aryl and alkenyl nitriles undergo ipso-silylation-decyanation, catalyzed by Chloro(1,5-cyclooctadiene)­rhodium(I)­ dimer, 10466, to give the corresponding trimethylsiliyl derivatives: J. Am. Chem. Soc., 128, 8152 (2006).

Indicaciones de peligro y de precaución del GHS

Indicaciones de peligro (UE): H225-H319-H317-H335

Highly flammable liquid and vapour. Causes serious eye irritation. May cause an allergic skin reaction. May cause respiratory irritation.

Indicaciones de precaución: P210-P261-P280-P240-P241-P303+P361+P353-P305+P351+P338-P304+P340-P405-P501a

Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. Ground/bond container and receiving equipment. Use explosion-proof electrical/ventilating/lighting/ equipment. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Otras referencias

Beilstein
1633463
Clase de peligro
3
Grupo de embalaje
II
Código de tarifa arancelaria unificado
2931.90
TSCA
Yes
RTECS
JM9170000

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