Gallium (III) bromide

Structural formula
General
Surname	Gallium (III) bromide
other names	Gallium tribromide
Molecular formula	GaBr 3
Brief description	white odorless solid
External identifiers / databases
EC number	236-609-5
ECHA InfoCard	100.033.267
PubChem	83477
Wikidata	Q2175117
properties
Molar mass	309.44 g mol −1
Physical state	firmly
density	3.69 g cm −3 (25 ° C)
Melting point	121.5 ° C
boiling point	279 ° C
solubility	soluble in water with hydrolysis
safety instructions
GHS labeling of hazardous substances danger
H and P phrases	H: 314
	P: 280-305 + 351 + 338-310
Thermodynamic properties
ΔH f 0	−386.6 kJ / mol
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Gallium (III) bromide is an inorganic chemical compound of gallium from the group of bromides .

Extraction and presentation

Gallium (III) bromide can be obtained by reacting gallium or gallium (III) oxide with hydrogen bromide .

{\ displaystyle \ mathrm {2 \ Ga + 6 \ HBr \ longrightarrow 2 \ GaBr_ {3} + \ 3 \ H_ {2}}}

{\ displaystyle \ mathrm {Ga_ {2} O_ {3} +6 \ HBr \ longrightarrow 2 \ GaBr_ {3} + \ 3 \ H_ {2} O}}

It can also be displayed directly from the elements.

{\ displaystyle \ mathrm {2 \ Ga + 3 \ Br_ {2} \ longrightarrow 2 \ GaBr_ {3}}}

properties

Gallium (III) bromide is a white, odorless, very hygroscopic solid that smokes heavily in moist air. It is only soluble in water with hydrolysis. In solid form, the compound is in the form of a dimer with edge-sharing GaBr ₄ - tetrahedra before ( monoclinic crystal structure, space group P 2 ₁ / c . (Space group No. 14) , a = 8.874 Å , b = 5.637 Å, c = 11.006 Å, β = 107.81 °). Gallium (III) bromide forms complexes of the type GaBr ₃ · D and rarely GaBr ₃ · 2D with donors . Template: room group / 14

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g ^h data sheet Gallium (III) bromide, anhydrous, powder, 99.999% trace metals basis from Sigma-Aldrich , accessed on February 17, 2014 ( PDF ).
^ 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).
↑ David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Standard Thermodynamic Properties of Chemical Substances, pp. 5-7.
↑ Georg Brauer: Handbook of Preparative Inorganic Chemistry . Elsevier, 2012, ISBN 0-323-16127-8 , pp. 995 ( limited preview in Google Book Search).
↑ 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. 853.
↑ 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
^ AF Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 101st edition. Walter de Gruyter, Berlin 1995, ISBN 3-11-012641-9 , p. 1096.

[Sigma-1] ↑ ^a ^b ^c ^d ^e ^f ^g ^h data sheet Gallium (III) bromide, anhydrous, powder, 99.999% trace metals basis from Sigma-Aldrich , accessed on February 17, 2014 ( PDF ).

[Jean_d’Ans,_Ellen_Lax,_Roger_Blachnik-2] 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).

[CRC90_5_7-3] David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Standard Thermodynamic Properties of Chemical Substances, pp. 5-7.

[Georg_Brauer-4] Georg Brauer: Handbook of Preparative Inorganic Chemistry . Elsevier, 2012, ISBN 0-323-16127-8 , pp. 995 ( limited preview in Google Book Search).

[brauer-5] 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. 853.

[6] 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

[Arnold_F._Holleman,_Egon_Wiberg,_Nils_Wiberg-7] AF Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 101st edition. Walter de Gruyter, Berlin 1995, ISBN 3-11-012641-9 , p. 1096.