Tin(IV) iodide

Tin(IV) iodide, also known as stannic iodide, is the chemical compound with the formula SnI4. This tetrahedral molecule crystallizes as a bright orange solid that dissolves readily in nonpolar solvents such as benzene.[1]

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
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.029.281
EC Number
  • 232-208-4
UNII
  • 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
  • [Sn](I)(I)(I)I
Properties
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)
2.106
Structure
Cubic, cP40
Pa-3 No. 205
Related compounds
Other anions
 Tin(IV) fluoride
Tin(IV) chloride
Tin(IV) bromide
Other cations
 Carbon tetraiodide
Silicon tetraiodide
Germanium tetraiodide
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

The compound is usually prepared by the reaction of iodine and tin:[2]

Sn + 2 I2 → SnI4

The compound hydrolyses in water.[3] In aqueous hydroiodic acid, it reacts to form a rare example of a hexaiodometallate:[2]

SnI4 + 2 I− → [SnI6]2−

See also

References
  1. Chemistry : Periodic Table : tin : compound data [tin (IV) iodide]
  2. Moeller, T.; Edwards, D. C. (1953). "Tin(IV) Iodide (Stannic Iodide)". Inorganic Syntheses. 4: 119–121. doi:10.1002/9780470132357.ch40.
  3. Hickling, G. G. (1990). "Gravimetric analysis: The synthesis of tin iodide". J. Chem. Educ. 67 (8): 702–703. Bibcode:1990JChEd..67..702H. doi:10.1021/ed067p702.
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