Indium (I, III) iodide

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Crystal structure
Crystal structure of indium (I, III) iodide
__ In +      __ In 3+      __ I -
General
Surname Indium (I, III) iodide
other names

Diindium tetraiodide

Ratio formula InI 2
Brief description

red-brown solid

External identifiers / databases
CAS number 13779-78-7
Wikidata Q4202652
properties
Molar mass 737.25 g mol −1
Physical state

firmly

density

4.71 g cm −3

Melting point

224 ° 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 .

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

Extraction and presentation

Indium (I, III) iodide can be obtained by reacting indium with mercury (II) iodide .

It can also be obtained by reacting indium and indium (III) iodide .

properties

Indium (I, III) iodide is a red-brown, crystalline, diamagnetic and hygroscopic solid that disproportionates in water to indium and indium (III) iodide . Its melt is colored black. The compound is meaningfully described as In [InI 4 ] or InI · InI 3 . It has an orthorhombic crystal structure in the space group Pnna (space group no. 52) with the lattice parameters a = 842.7 pm, b = 1096.5 pm, c = 1117.3 pm and eight formula units per unit cell . Template: room group / 52

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. 870.
  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. ^ AF Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 101st edition. Walter de Gruyter, Berlin 1995, ISBN 3-11-012641-9 , p. 1101.
  4. ^ G. Ferguson, J. Trotter: Structure Reports for 1984, Volume 51A: Metals and Inorganic Sections . Springer, 1987, ISBN 90-277-2470-9 , pp. 151 ( limited preview in Google Book search).