Gallium (I, III) chloride

Crystal structure
	__ Ga + __ Ga 3+ __ Cl -
Crystal system	tetragonal
Lattice parameters	a = 7.2235 Å , b = 9.7211 Å, c = 9.5421 Å
General
Surname	Gallium (I, III) chloride
other names	Galium (II) chloride; Gallium dichloride;
Ratio formula	GaCl 2
Brief description	colorless solid
External identifiers / databases
PubChem	6332932
ChemSpider	4889583
Wikidata	Q4498198
properties
Molar mass	140.62 g mol −1
Physical state	firmly
density	2.42 g cm −3
Melting point	172.4 ° C
boiling point	535 ° C (beginning of decomposition above 200 ° C)
solubility	soluble in benzene; Decomposes on contact with water;
safety instructions
GHS hazard labeling ; no classification available
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 .

Gallium (I, III) chloride is an inorganic chemical compound of gallium from the group of chlorides .

Extraction and presentation

Gallium (I, III) chloride can be obtained by reacting gallium with gallium (III) chloride at 180 ° C in the absence of moisture.

{\ displaystyle {\ ce {2GaCl3 + Ga -> 3GaCl2}}}

It is also possible to display it by reacting gallium with hot hydrochloric acid .

{\ displaystyle {\ ce {Ga + 2HCl -> GaCl2 + H2}}}

properties

Gallium (I, III) chloride is a colorless, hygroscopic solid that is soluble in benzene and is used as a strong reducing agent. It is in crystalline form and in the melt as Ga [GaCl ₄ ]. In molten form, the compound conducts electricity and does not wet glass. Slow cooling of the clean melt leads to a supercooled melt , which can be liquid for years even at room temperature. The lattice constants of the tetragonal unit cell are a = 7.2235 Å , b = 9.7211 Å, c = 9.5421 Å.

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g 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. 853.
^ Egon Wiberg, Nils Wiberg: Inorganic Chemistry . Academic Press, 2001, ISBN 0-12-352651-5 , pp. 1036 ( limited preview in Google Book search).
↑ ^a ^b ^c ^d ^e Laurence S. Foster: Gallium (II) chloride . In: JC Bailar, Jr. (Ed.): Inorganic Syntheses . tape 4 . McGraw-Hill, Inc., 1953, pp. 111-114 (English).
↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
^ S. Chand: Advanced Inorganic Chemistry . 2000, ISBN 81-219-0263-0 , pp. 801 ( limited preview in Google Book search).
↑ G. Singh: Chemistry Of D-Block Elements . Discovery Publishing House, 2007, ISBN 81-8356-242-6 , pp. 61 ( limited preview in Google Book search).
^ AP Wilkinson; AK Cheetham: Study of oxidation ‐ state contrast in gallium dichloride by synchrotron X ‐ ray anomalous scattering . In: Acta Crystallographica Section B . tape 47 , no. 2 , April 1991, pp. 155–161 , doi : 10.1107 / S0108768190010485 (English).

[brauer-1] ↑ ^a ^b ^c ^d ^e ^f ^g 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. 853.

[Egon_Wiberg,_Nils_Wiberg-2] Egon Wiberg, Nils Wiberg: Inorganic Chemistry . Academic Press, 2001, ISBN 0-12-352651-5 , pp. 1036 ( limited preview in Google Book search).

[IS4-3] Laurence S. Foster: Gallium (II) chloride . In: JC Bailar, Jr. (Ed.): Inorganic Syntheses . tape 4 . McGraw-Hill, Inc., 1953, pp. 111-114 (English).

[NV-4] This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.

[S._Chand-5] S. Chand: Advanced Inorganic Chemistry . 2000, ISBN 81-219-0263-0 , pp. 801 ( limited preview in Google Book search).

[G._Singh-6] G. Singh: Chemistry Of D-Block Elements . Discovery Publishing House, 2007, ISBN 81-8356-242-6 , pp. 61 ( limited preview in Google Book search).

[7] AP Wilkinson; AK Cheetham: Study of oxidation ‐ state contrast in gallium dichloride by synchrotron X ‐ ray anomalous scattering . In: Acta Crystallographica Section B . tape 47 , no. 2 , April 1991, pp. 155–161 , doi : 10.1107 / S0108768190010485 (English).