Gallium (III) iodide

Crystal structure
	__ Ga 3+ __ I -
General
Surname	Gallium (III) iodide
other names	Gallium triiodide
Ratio formula	GaI 3
Brief description	light yellow solid
External identifiers / databases
EC number	236-611-6
ECHA InfoCard	100.033.269
PubChem	83478
Wikidata	Q2613252
properties
Molar mass	450.44 g mol −1
Physical state	firmly
density	4.15 g cm −3 (25 ° C)
Melting point	212 ° C
boiling point	346 ° C
safety instructions
H and P phrases	H: 314-317-361
	P: 280-305 + 351 + 338-310
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Gallium (III) iodide is an inorganic chemical compound of gallium from the group of iodides .

Extraction and presentation

Gallium (III) iodide can be obtained by reacting gallium with iodine .

{\ displaystyle \ mathrm {2 \ Ga + 3 \ I_ {2} \ longrightarrow 2 \ GaI_ {3}}}

properties

Gallium (III) iodide is a light yellow, hygroscopic and crystalline solid that smokes in the air. Its melt is orange-brown. In the gas state, there is extensive dissociation to form monomers. In the solid state it is present as the dimer Ga ₂ I ₆ . The compound crystallizes monoclinically in the space group P 2 ₁ / c (space group no. 14) with the lattice parameters a = 9.584 Å , b = 6.084 Å, c = 11.839 Å and β = 107.78 °. An orthorhombic crystal structure with the space group Cmcm (No. 63) is also known. Template: room group / 14 Template: room group / 63

Individual evidence

↑ ^a ^b ^c ^d ^e Georg Brauer (Ed.), With the collaboration of Marianne Baudler u. a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 854.
↑ ^a ^b ^c ^d data sheet Gallium (III) iodide, anhydrous, powder, 99.999% trace metals basis from Sigma-Aldrich , accessed on February 24, 2014 ( PDF ).
^ AJ Downs: Chemistry of Aluminum, Gallium, Indium, and Thallium . Springer, 1993, ISBN 0-7514-0103-X , p. 132 ( limited preview in Google Book search).
↑ SI Troyanov, T. Krahl, E. Kemnitz: Crystal structures of GaX ₃ (X = Cl, Br, I) and AlI ₃ . In: Zeitschrift für Kristallographie , 2004 , 219 , pp. 88-92 doi : 10.1524 / zkri.219.2.88.26320
^ Jean d'Ans, Ellen Lax, Roger Blachnik: Pocket book for chemists and physicists . Springer DE, 1998, ISBN 3-642-58842-5 , pp. 462 ( limited preview in Google Book search).

[brauer-1] Georg Brauer (Ed.), With the collaboration of Marianne Baudler u. a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 854.

[Sigma-2] ta sheet Gallium (III) iodide, anhydrous, powder, 99.999% trace metals basis from Sigma-Aldrich , accessed on February 24, 2014 ( PDF ).

[A.J._Downs-3] AJ Downs: Chemistry of Aluminum, Gallium, Indium, and Thallium . Springer, 1993, ISBN 0-7514-0103-X , p. 132 ( limited preview in Google Book search).

[4] SI Troyanov, T. Krahl, E. Kemnitz: Crystal structures of GaX ₃ (X = Cl, Br, I) and AlI ₃ . In: Zeitschrift für Kristallographie , 2004 , 219 , pp. 88-92 doi : 10.1524 / zkri.219.2.88.26320

[Jean_d’Ans,_Ellen_Lax,_Roger_Blachnik-5] Jean d'Ans, Ellen Lax, Roger Blachnik: Pocket book for chemists and physicists . Springer DE, 1998, ISBN 3-642-58842-5 , pp. 462 ( limited preview in Google Book search).