Potassium tetrachloroiodate(III)

Potassium tetrachloroiodate(III)

Identifiers
CAS Number	14323-44-5  Y
3D model (JSmol)	Interactive image
ChemSpider	67168471
PubChem CID	23662692
CompTox Dashboard (EPA)	DTXSID70963830
InChI InChI=1S/Cl4I.K/c1-5(2,3)4;/q-1;+1 Key: IHRCHDIHZYZUCK-UHFFFAOYSA-N
SMILES Cl[I-](Cl)(Cl)Cl.[K+]
Properties
Chemical formula	KICl4
Molar mass	307.80 g·mol−1
Melting point	116 °C (241 °F; 389 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Potassium tetrachloroiodate(III) is a coordination compound with the chemical formula KICl₄. Its monohydrate crystal structure belongs to the monoclinic system and has the space group P2₁/n, yellow crystals. ^{[1] [2]}

Synthesis

Potassium tetrachloroiodate(III) can be obtained by reacting iodine, potassium chlorate, and 6 mol/L hydrochloric acid solution containing 1.5 mol/L potassium chloride, condensing, filtering, and vacuum drying. The reaction is: ^{[3] [4]}

2 KClO₃ + I₂ ⇌ 2 KIO₃ + Cl₂

KIO₃ + 6 HCl ⇌ KICl₄ + Cl₂ + 3 H₂O

References

1. Ejima, T.; de Boer, J. L.; Vos, A. (10 April 1963). "The refinement of the crystal structure of KICl4.H2O". Acta Crystallographica. 16 (4): 243–247. Bibcode:1963AcCry..16..243E. doi:10.1107/S0365110X63000682.
2. Derakhshan, Behzad M.; Finch, Arthur; Gates, Peter N.; Page, Terence H. (September 1979). "Thermochemistry of polyhalides. IV. Anhydrous and hydrated potassium tetrachloroiodates". Thermochimica Acta. 32 (1–2): 317–320. Bibcode:1979TcAc...32..317D. doi:10.1016/0040-6031(79)85120-5.
3. "Science made alive: Chemistry/Compounds". woelen.homescience.net.
4. "Synthesis of Potassium Tetrachloroidate". prepchem.com.