Diethylsilane

Structural formula
General
Surname	Diethylsilane
other names	Diethyl silicon dihydride 3-silapentane
Molecular formula	C 4 H 12 Si
Brief description	colorless, clear
External identifiers / databases
CAS number 542-91-6 EC number 208-834-9 ECHA InfoCard 100.008.032 PubChem 6327565 Wikidata Q20054516
properties
Molar mass	88.22 g mol −1
Physical state	liquid
density	0.681 g cm −3
Melting point	−134.39 ° C
boiling point	56 ° C
safety instructions
GHS labeling of hazardous substances danger H and P phrases H: 225 P: 210
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Diethylsilane is a chemical compound from the group of organosilicon compounds .

Extraction and presentation

One way of producing diethylsilane is to hydrogenate the corresponding halogen compounds, such as dichlorodiethylsilane , with lithium aluminum hydride or sodium hydride :

${\displaystyle \mathrm {2\ Cl_{2}Si(C_{2}H_{5})_{2}+\ LiAlH_{4}\ {\xrightarrow {}}\ 2\ H_{2}Si(C_{2}H_{5})_{2}\ +\ LiCl\ +\ AlCl_{3}} }$

${\displaystyle \mathrm {Cl_{2}Si(C_{2}H_{5})_{2}+\ 2\ NaH\ {\xrightarrow {}}\ H_{2}Si(C_{2}H_{5})_{2}\ +\ 2\ NaCl} }$

properties

Physical Properties

Diethylsilane is a colorless, clear liquid with a refractive index of 1.391 and a flash point of −20 ° C.

Chemical properties

In the presence of hydrogen and a transition metal - catalyst Diethysilan reacts with ammonia , with elimination of hydrogen to silazane - oligomers :

${\displaystyle \mathrm {n\ (C_{2}H_{5})_{2}SiH_{2}+\ n\ NH_{3}\ {\xrightarrow[{Ru_{3}(CO)_{12},H_{2}}]{\ }}((C_{2}H_{5})_{2}SiNH)_{n}+\ 2n\ H_{2}} }$

Individual evidence

1. ↑ ^{a b c d e f g} Diethylsilane data sheet from Sigma-Aldrich , accessed on May 1, 2015 ( PDF ).
2. ^ Didier Astruc: Organometallic Chemistry and Catalysis. Springer Science & Business Media, 2007, ISBN 978-3-540-46129-6 , p. 257 ( limited preview in Google book search).
3. ^ Stephan Pawlenko: Organosilicon Chemistry. Walter de Gruyter, 1986, ISBN 978-3-11-086238-6 , p. 30 ( limited preview in Google book search).
4. ↑ Barry Arkles: Silanes. (PDF) Reprint from Kirk-Othmer Encyclopedia of Chemical Technology, Forth Edition, Volume 22, Page 38-69. In: Gelest. P. 53 , accessed on May 1, 2015 (English).