Tetraiodosilane

Structural formula
General
Surname	Tetraiodosilane
other names	Silicon tetraiodide; Tetraiodosilane;
Molecular formula	SiI 4
Brief description	white solid
External identifiers / databases
EC number	236-706-2
ECHA InfoCard	100.033.355
PubChem	83498
Wikidata	Q217994
properties
Molar mass	535.70 g mol −1
Physical state	firmly
density	4.198 g cm −3 (25 ° C)
Melting point	120.5 ° C
boiling point	287.4 ° C
solubility	soluble in toluene; Decomposes in water;
safety instructions
H and P phrases	H: 301-311-314-317-334-360
	P: 201-261-280-301 + 310-305 + 351 + 338-310
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Tetraiodsilane (also silicon tetraiodide ) is the periodic derivative of monosilane . It is an inorganic chemical compound of silicon from the group of iodides and silicon tetrahalides .

Extraction and presentation

Tetraiodosilane can be obtained by reacting silicon with iodine or hydrogen iodide .

{\ displaystyle \ mathrm {Si + 2 \ I_ {2} \ longrightarrow SiI_ {4}}}

properties

Silicon tetraiodide is a very moisture- and light-sensitive, colorless crystal mass that melts into a lemon-yellow liquid. When heated (especially in a vacuum) it decomposes easily into the elements. After a while the compound turns reddish due to the deposition of iodine. With water it decomposes into hydrogen iodide and silica . It has a cubic crystal structure with the space group Pa 3 (space group no. 205) . Template: room group / 205

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g data sheet Silicon tetraiodide, ≥99.9% trace metals basis at Sigma-Aldrich , accessed on January 5, 2014 ( PDF ).
↑ ^a ^b ^c Georg Brauer (ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 676.
^ ^A ^b Jean d'Ans, Ellen Lax, Roger Blachnik: Pocket book for chemists and physicists . Springer DE, 1998, ISBN 3-642-58842-5 , pp. 730 ( limited preview in Google Book search).
^ AF Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 101st edition. Walter de Gruyter, Berlin 1995, ISBN 3-11-012641-9 , p. 909.

[Sigma-1] ↑ ^a ^b ^c ^d ^e ^f ^g data sheet Silicon tetraiodide, ≥99.9% trace metals basis at Sigma-Aldrich , accessed on January 5, 2014 ( PDF ).

[brauer-2] Georg Brauer (ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 676.

[Jean_d’Ans,_Ellen_Lax,_Roger_Blachnik-3] A ^b Jean d'Ans, Ellen Lax, Roger Blachnik: Pocket book for chemists and physicists . Springer DE, 1998, ISBN 3-642-58842-5 , pp. 730 ( limited preview in Google Book search).

[Arnold_F._Holleman,_Egon_Wiberg,_Nils_Wiberg-4] AF Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 101st edition. Walter de Gruyter, Berlin 1995, ISBN 3-11-012641-9 , p. 909.