Tin(IV) iodide

Tin(IV) iodide

Photograph of a sample of tin tetraiodide Ball-and-stick model of the unit cell of tin tetraiodide
Structure and dimensions of the tin(IV) iodide molecule Ball-and-stick model of the tin(IV) iodide molecule
Names
IUPAC name tin(IV) iodide
Other names tin tetraiodide stannic iodide
Identifiers
CAS Number	7790-47-8 N
ChemSpider	23033 N
EC Number	232-208-4
Jmol 3D model	Interactive image
PubChem	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 verify (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:

Sn + 2 I₂ → SnI₄

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

SnI₄ + 2 I⁻ → [SnI₆]²⁻

See also

• Tin(II) iodide
• Tin(IV) chloride