Potassium tetrachloroiodate(III)
{{Chembox
| Name = Potassium tetrachloroiodate(III)
| ImageFile = Potassium tetrachloroiodate(III) 2.jpg
| Section1 = {{Chembox Identifiers
| CASNo = 14323-44-5
| CASNo_Ref = {{cascite|correct|CAS}}
| ChemSpiderID = 67168471
| DTXSID = DTXSID70963830
| PubChem = 23662692
| StdInChI=1S/Cl4I.K/c1-5(2,3)4;/q-1;+1
| StdInChIKey = IHRCHDIHZYZUCK-UHFFFAOYSA-N
| SMILES = Cl[I-](Cl)(Cl)Cl.[K+]
}}
| Section2 = {{Chembox Properties
| Formula = KICl4
| K=1|I=1|Cl=4
| MolarMass =
| Appearance =
| Density =
| Solubility =
| MeltingPtC = 116
}}
}}
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.{{cite journal |last1=Ejima |first1=T. |last2=de Boer |first2=J. L. |last3=Vos |first3=A. |title=The refinement of the crystal structure of KICl4.H2O |journal=Acta Crystallographica |date=10 April 1963 |volume=16 |issue=4 |pages=243–247 |doi=10.1107/S0365110X63000682 |bibcode=1963AcCry..16..243E }}{{cite journal |last1=Derakhshan |first1=Behzad M. |last2=Finch |first2=Arthur |last3=Gates |first3=Peter N. |last4=Page |first4=Terence H. |title=Thermochemistry of polyhalides. IV. Anhydrous and hydrated potassium tetrachloroiodates |journal=Thermochimica Acta |date=September 1979 |volume=32 |issue=1–2 |pages=317–320 |doi=10.1016/0040-6031(79)85120-5 |bibcode=1979TcAc...32..317D }}
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:{{Cite web|url=https://woelen.homescience.net/science/chem/compounds/potassium_tetrachloroiodide.html|title=Science made alive: Chemistry/Compounds|website=woelen.homescience.net}}{{Cite web|url=https://prepchem.com/synthesis-of-potassium-tetrachloroiodate/|title=Synthesis of Potassium Tetrachloroidate|website=prepchem.com}}
:{{chem2 | 2 KClO3 + I2 <-> 2 KIO3 + Cl2 }}
:{{chem2 | KIO3 + 6 HCl <-> KICl4 + Cl2 + 3 H2O }}