Gallium (I, III) iodide

Crystal structure
__ Ga +      __ Ga 3+      __ I -
General
Surname	Gallium (I, III) iodide
other names	Gallium (II) iodide Gallium diiodide
Ratio formula	GaI 2
Brief description	yellow solid
External identifiers / databases
CAS number 18434-30-5 PubChem 10855247 ChemSpider 9030538 Wikidata Q15628340
properties
Molar mass	323.5 g mol −1
Physical state	firmly
Melting point	211 ° C
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 .

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

Extraction and presentation

Gallium (I, III) iodide can be obtained by reacting gallium with iodine at 350 ° C or with mercury (II) iodide at 220 ° C.

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

${\displaystyle \mathrm {Ga+HgI_{2}\longrightarrow Hg+GaI_{2}} }$

properties

Gallium (I, III) iodide is a yellow hygroscopic diamagnetic solid. In liquid form it is red. At 250 ° C it disproportionates easily to gallium (I) iodide and gallium (III) iodide . The compound is in solid form as Ga [GaI ₄ ].

Individual evidence

1. ↑ ^{a b c d e f} 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. 855.
2. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
3. ↑ Jane E. Macintyre: Dictionary of Inorganic Compounds . CRC Press, 1992, ISBN 0-412-30120-2 , pp. 3304 ( limited preview in Google Book Search).
4. ^ Egon Wiberg, Nils Wiberg: Inorganic Chemistry . Academic Press, 2001, ISBN 0-12-352651-5 , pp. 1036 ( limited preview in Google Book search).