Titanium (III) iodide

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Crystal structure
Structural formula of titanium (III) iodide
General
Surname Titanium (III) iodide
other names

Titanium triiodide

Ratio formula TiI 3
Brief description

purple-black solid

External identifiers / databases
CAS number 13783-08-9
Wikidata Q289292
properties
Molar mass 428.6 g mol −1
Physical state

firmly

density

4.9 g cm −3

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

Extraction and presentation

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

It can also be obtained by reducing titanium (IV) iodide with aluminum .

properties

Titanium (III) iodide is in the form of purple-black, needle-shaped crystals that are resistant to 300 ° C when heated in a high vacuum and decompose into titanium (II) iodide and titanium (IV) iodide from 310 ° C. The compound has a hexagonal crystal structure with the space group P 6 3 / mcm (space group no. 193) (a = 714.6  pm , c = 650.2 pm). There is also a modification at low temperature with an orthorhombic crystal structure ( zirconium (III) iodide structure) and the space group Pmnm (No. 59, position 3) . Template: room group / 193Template: room group / 59.3

Individual evidence

  1. ↑ 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 II, Ferdinand Enke, Stuttgart 1978, ISBN 3-432-87813-3 , p. 1343.
  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. ^ Catherine E. Housecroft, AG Sharpe: Inorganic Chemistry . Pearson Education, 2005, ISBN 0-13-039913-2 , pp. 601 ( limited preview in Google Book search).
  4. ^ Peter Paetzold: Chemistry: An introduction . Walter de Gruyter, 2010, ISBN 3-11-020268-9 , p. 204 ( limited preview in Google Book search).
  5. ↑ Joachim Angelkort, Andreas Schoenleber, Sander van Smaalen : Low- and high-temperature crystal structures of. In: Journal of Solid State Chemistry . 182, 2009, pp. 525-531, doi : 10.1016 / j.jssc.2008.11.028 .