Hexasilane

Structural formula
General
Surname	Hexasilane
other names	n -hexasilane
Molecular formula	Si 6 H 14
Brief description	colorless liquid
External identifiers / databases
CAS number 14693-61-9 PubChem 71350631 Wikidata Q16635985
properties
Molar mass	182.62 g mol −1
Physical state	liquid
density	0.847 g cm −3
Melting point	−44.7 ° C
boiling point	193.6 ° C
solubility	reacts with water
Refractive index	1.5902
safety instructions
GHS hazard labeling no classification available
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C

Hexasilane is a chemical compound from the group of silanes .

Extraction and presentation

Hexasilane can be obtained in the form of a raw silane mixture by decomposing magnesium silicide with mineral acids and excluding air or from monosilane with the help of an electrical discharge. The connection was first demonstrated by Carl Somieski .

properties

Hexasilane is an unstable colorless liquid that reacts with water. It does not ignite immediately in air (in contrast to the shorter silanes) even at 0 ° C, but only after a certain time. Like the higher homologues (n ≥ 4), hexasilane is increasingly less thermally stable and decomposes even at room temperature in daylight, releasing hydrogen and forming the shorter homologues and other polymer products ((SiH _<2 ) _x ).

use

Hexasilane can be used to produce silicon layers in the semiconductor industry.

Individual evidence

1. ^ Peter Paetzold: Chemistry: An introduction . Walter de Gruyter, 2009, ISBN 978-3-11-021135-1 , p. 659 ( limited preview in Google Book search).
2. ^ ^{A b c} William M. Haynes: CRC Handbook of Chemistry and Physics, 93rd Edition . CRC Press, 2016, ISBN 978-1-4398-8050-0 ( limited preview in Google Book Search).
3. ^ ^{A b} A. F. Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 101st edition. Walter de Gruyter, Berlin 1995, ISBN 3-11-012641-9 , p. 485.
4. ↑ ^{a b} Jane E. Macintyre: Dictionary of Inorganic Compounds . CRC Press, 1992, ISBN 978-0-412-30120-9 , pp. 3444 ( limited preview in Google Book search).
5. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
6. ^ Eugene G. Rochow: An Introduction Chemistry Of The Silicones . Read Books Ltd, 2013, ISBN 978-1-4465-4610-9 ( limited preview in Google Book Search).
7. ^ AP Hagen: Inorganic Reactions and Methods, The Formation of Bonds to C, Si, Ge, Sn, Pb . John Wiley & Sons, 2009, ISBN 978-0-470-14544-9 , pp. 8 ( limited preview in Google Book search).
8. ↑ Helmut Werner: History of inorganic chemistry: The development of a science in Germany from Döbereiner to today . John Wiley & Sons, 2016, ISBN 978-3-527-33907-5 , pp. 35 ( limited preview in Google Book search).
9. ↑ Bernhard Hidding: Investigation of the suitability of silanes as fuels in the aerospace industry. ( Memento of the original from March 4, 2016 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. (PDF; 4.5 MB) Diploma thesis at the University of the Federal Armed Forces in Munich and the Heinrich Heine University in Düsseldorf , January 2004. 
10. ↑ Alfred Stock, Paul Stiebeler, Friedrich Zeidler: Siliciumwasserstoffe, XVI .: The higher silicon hydrides . In: Reports of the German Chemical Society . tape 56 , no. 7 , July 4, 1923, p. 1695-1705 , doi : 10.1002 / cber.19230560735 .