Antimony triiodide

Antimony triiodide
Names
IUPAC name
Antimony triiodide, Antimony(III) iodide
Systematic IUPAC name
Triiodostibane
Identifiers
7790-44-5 N
ChemSpider 23032 YesY
EC Number 232-205-8
Jmol interactive 3D Image
Image
PubChem 24630
Properties
I3Sb
Molar mass 502.47 g·mol−1
Appearance red crystals
Density 4.921 g/cm3
Melting point 170.5 °C (338.9 °F; 443.6 K)
Boiling point 401.6 °C (754.9 °F; 674.8 K)
reacts
Solubility soluble in benzene, alcohol, acetone, CS2, HCl, KI, SnCl4, C2H7N
insoluble in CHCl3, CCl4[1]
Solubility in diiodomethane 10.15% v/v (12 °C)[2]
-0.0001472 cm3/ mol
Structure
Rhombohedral, hR24,
R-3, No. 148
1.58 D
Thermochemistry
81.6 J/mol·K (gas)[1]
-100.4 kJ/mol[1]
Hazards
GHS pictograms [3]
GHS signal word Warning
H302, H332, H411[3]
P273[3]
Xn N
R-phrases R20/22, R51/53
S-phrases S61
US health exposure limits (NIOSH):
TWA 0.5 mg/m3 (as Sb)[4]
TWA 0.5 mg/m3 (as Sb)[4]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YesYN ?)
Infobox references

Antimony triiodide is the chemical compound with the formula SbI3. This ruby-red solid is the only characterized "binary" iodide of antimony, i.e. the sole compound isolated with the formula SbxIy. It contains antimony in its +3 oxidation state. Like many iodides of the heavier main group elements, its structure depends on the phase. Gaseous SbI3 is a molecular, pyramidal species as anticipated by VSEPR theory. In the solid state, however, the Sb center is surrounded by an octahedron of six iodide ligands, three of which are closer and three more distant.[5] For the related compound BiI3, all six Bi—I distances are equal.[6]

Production

It may be formed by the reaction of antimony with elemental iodine, or the reaction of antimony trioxide with hydroiodic acid.

Alternatively, it may be prepared by the interaction of antimony and iodine in boiling benzene or tetrachloroethane.

Uses

SbI3 has been used as a dopant in the preparation of thermoelectric materials.[7]

References

  1. 1 2 3 http://chemister.ru/Database/properties-en.php?dbid=1&id=5180
  2. ↑ Seidell, Atherton; Linke, William F. (1952). [Google Books Solubilities of Inorganic and Organic Compounds] Check |url= value (help). Van Nostrand. Retrieved 2014-05-29.
  3. 1 2 3 Sigma-Aldrich Co., Antimony(III) iodide. Retrieved on 2014-05-29.
  4. 1 2 "NIOSH Pocket Guide to Chemical Hazards #0036". National Institute for Occupational Safety and Health (NIOSH).
  5. ↑ Hsueh, H.C., Chen, R.K., Vass, H., Clark, S.J., Ackland, G.J., Poon, W.C.K., Crain, J. (1998). "Compression mechanisms in quasimolecular XI3 (X = As, Sb, Bi) solids". Physical Review B 58 (22): 14812–14822. doi:10.1103/PhysRevB.58.14812.
  6. ↑ Holleman, A. F.; Wiberg, E. "Inorganic Chemistry" Academic Press: San Diego, 2001. ISBN 0-12-352651-5.
  7. ↑ D.-Y. Chung, T. Hogan, P. Brazis, M. Rocci-Lane, C. Kannewurf, M. Bastea, C. Uher, M. G. Kanatzidis (2000). "CsBi4Te6: A High-Performance Thermoelectric Material for Low-Temperature Applications". Science 287 (5455): 1024–7. doi:10.1126/science.287.5455.1024. PMID 10669411.

External links

Wikimedia Commons has media related to Antimony triiodide.
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LiI BeI2 BI3 CI4 NI3 I2O4,
I2O5,
I4O9		 IF,
IF3,
IF5,
IF7		 Ne
NaI MgI2 AlI3 SiI4 PI3,
P2I4		 S ICl,
ICl3		 Ar
KI CaI2 Sc TiI4 VI3 CrI3 MnI2 FeI2 CoI2 NiI2 CuI ZnI2 Ga2I6 GeI2,
GeI4 		AsI3 Se IBr Kr
RbI SrI2 Y ZrI4 Nb Mo Tc Ru Rh Pd AgI CdI2 InI3 SnI4,
SnI2		 SbI3 TeI4 I Xe
CsI BaI2   Hf Ta W Re Os Ir Pt AuI Hg2I2,
HgI2		 TlI PbI2 BiI3 Po AtI Rn
Fr Ra   Rf Db Sg Bh Hs Mt Ds Rg Cn Uut Fl Uup Lv Uus Uuo
↓
La Ce Pr Nd Pm SmI2 Eu Gd TbI3 Dy Ho Er Tm Yb Lu
Ac ThI4 Pa UI3,
UI4		 Np Pu Am Cm Bk Cf Es Fm Md No Lr
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