Tin tetraiodide

Tin(IV) iodide

Names
IUPAC name tin(IV) iodide
Other names tin tetraiodide stannic iodide
Identifiers
CAS Number	7790-47-8 N
3D model (JSmol)	Interactive image
ChemSpider	23033 N
ECHA InfoCard	100.029.281
EC Number	232-208-4
PubChem CID	11490544
InChI InChI=1S/4HI.Sn/h4*1H;/q;;;;+4/p-4 N Key: QPBYLOWPSRZOFX-UHFFFAOYSA-J N InChI=1/4HI.Sn/h4*1H;/q;;;;+4/p-4 Key: QPBYLOWPSRZOFX-XBHQNQODAO
SMILES [Sn](I)(I)(I)I
Properties
Chemical formula	SnI4
Molar mass	626.328 g mol−1
Appearance	red-orange solid
Density	4.56 g cm−3
Melting point	143 °C (289 °F; 416 K)
Boiling point	348.5 °C (659.3 °F; 621.6 K)
Refractive index (nD)	2.106
Structure
Crystal structure	Cubic, cP40
Space group	P-43m, No. 205
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N  (what is YN ?)
Infobox references

Tin(IV) iodide, also known as stannic iodide, is the chemical compound with the formula SnI₄. This tetrahedral molecule crystallises as a bright orange solid that dissolves readily in nonpolar solvents such as benzene.

The compound is usually prepared by the reaction of iodine and tin:

The compound hydrolyses in water. In aqueous hydroiodic acid, it reacts to form a rare example of a metal hexaiodide: