Iron(II) iodide

Iron(II) iodide
Names
	IUPAC name Iron(II) iodide
Identifiers
CAS Number	7783-86-0 ;
3D model (JSmol)	Interactive image;
ChemSpider	74200;
ECHA InfoCard	100.029.119
EC Number	232-031-2;
PubChem CID	82220;
UNII	F5452U54PN ;
CompTox Dashboard (EPA)	DTXSID10329658 ;
	InChI InChI=1S/Fe.2HI/h;21H/q+2;;/p-2 Key: BQZGVMWPHXIKEQ-UHFFFAOYSA-L; InChI=1/Fe.2HI/h;21H/q+2;;/p-2 Key: BQZGVMWPHXIKEQ-NUQVWONBAN;
	SMILES [Fe+2].[I-].[I-];
Properties
Chemical formula	FeI2
Molar mass	309.65 g/mol
Appearance	White to off-white powder
Density	5.315 g/cm3
Melting point	587 °C (1,089 °F; 860 K)
Boiling point	827 °C (1,521 °F; 1,100 K)
Solubility in water	soluble
Magnetic susceptibility (χ)	+13,600·10−6 cm3/mol
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
	Infobox references

Iron(II) iodide is an inorganic compound with the chemical formula FeI₂.[1] It is used as a catalyst in organic reactions.

Reactions

The thermal decomposition of tetrahydrate iron(II) iodide produces iron(II) hydroxide-iodide, hydrogen iodide, and water:

FeI₂•4H₂O → Fe(OH)I + HI + 3 H₂O

This reaction takes place at a temperature of over 100 °C.

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