Titanium (II) iodide

Crystal structure
__ Ti 2+      __ I -
General
Surname	Titanium (II) iodide
other names	Titanium diiodide
Ratio formula	TiI 2
Brief description	black solid
External identifiers / databases
CAS number 13783-07-8 PubChem 139268 Wikidata Q2436776
properties
Molar mass	301.676 g mol −1
Physical state	firmly
density	5.2 g cm −3
Melting point	480 ° C (decomposition)
solubility	Decomposes in water
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 .

Titanium (II) iodide is an inorganic chemical compound of titanium from the group of iodides .

Extraction and presentation

Titanium (II) iodide can be obtained by reacting titanium with iodine .

${\displaystyle \mathrm {Ti+I_{2}\longrightarrow TiI_{2}} }$

properties

Titanium (II) iodide is a black solid that catches fire in moist air and dissolves in water to form the titanium (III) salt with evolution of hydrogen . It has a trigonal crystal structure of the cadmium (II) iodide type ( polytype 2H) with the space group P 3 m 1 (space group no.164 ) and the lattice parameters a = 411.0 and c = 682.0 pm. The compound decomposes above 480 ° C.

Individual evidence

1. ↑ ^{a b c} WebElements: Periodic Table of the Elements - titanium diiodide
2. ↑ ^{a b} J. D. Fast: The preparation of pure titanium iodides. In: Recueil des Travaux Chimiques des Pays-Bas. 58, 1939, pp. 174-180, doi : 10.1002 / recl.19390580209 .
3. ↑ ^{a b c} Georg Brauer (ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume II, Ferdinand Enke, Stuttgart 1978, ISBN 3-432-87813-3 , p. 1336.
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.