Zirconium(IV) iodide

Zirconium(IV) iodide
Other names zirconium tetraiodide
Identifiers
CAS number	13986-26-0 N
ChemSpider	75903 Y
Jmol-3D images	{{#if:[Zr+4].[I-].[I-].[I-].[I-]|Image 1
SMILES [Zr+4].[I-].[I-].[I-].[I-]
InChI InChI=1S/4HI.Zr/h4*1H;/q;;;;+4/p-4 Y Key: XLMQAUWIRARSJG-UHFFFAOYSA-J Y InChI=1/4HI.Zr/h4*1H;/q;;;;+4/p-4 Key: XLMQAUWIRARSJG-XBHQNQODAZ
Properties
Molecular formula	ZrI4
Molar mass	598.842 g/mol
Appearance	orange-yellow crystalline hygroscopic
Density	4.580 g/cm3, solid
Melting point	499 °C (triple point)
Boiling point	431 °C (sublimes)
Solubility in water	soluble
Structure
Crystal structure	Monoclinic, mP30
Space group	P2/c, No. 13
Hazards
EU classification	not listed
NFPA 704	0 3 2
Related compounds
Other anions	Zirconium(IV) fluoride Zirconium(IV) chloride Zirconium(IV) bromide
Other cations	Titanium tetraiodide Hafnium tetraiodide
N (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Zirconium(IV) iodide is the chemical compound with the formula ZrI₄. It is the most stable and most readily available iodide of zirconium.

This orange-coloured species is volatile, subliming as intact tetrahedral ZrI₄ molecules. It is prepared by the direct reaction of powdered zirconium metal and iodine.^[1]

Pyrolysis of zirconium(IV) iodide gas by contact of hot wire was the first industrial process for the commercial production of pure ductile metallic zirconium. This crystal bar process was developed by Anton Eduard van Arkel and Jan Hendrik de Boer in 1925.^[2]

References