Indium(I) iodide
{{Chembox
| Name = Indium(I) iodide
| ImageFile1 = InI.png
| ImageSize1 = 200px
| ImageFile2 =
| ImageSize2 = 200px
| IUPACName = iodoindium
| PIN =
| OtherNames = Indium monoiodide
|Section1={{Chembox Identifiers
| CASNo = 13966-94-4
| CASNo_Ref = {{cascite|correct|CAS}}
| ChemSpiderID = 21241509
| ChEBI =
| EINECS = 237-746-3
| Gmelin =
| PubChem = 6336605
| DTXSID =
| StdInChI=1S/HI.In/h1H;/q;+1/p-1
| StdInChIKey = FOVZCYAIUZHXGB-UHFFFAOYSA-M
| SMILES = [In]I
}}
|Section2={{Chembox Properties
| In=1 | I=1
| Appearance = red-brown solid
| Density = 5.32 g/cm3
| MeltingPtC = 365
| BoilingPtC =
| Solubility = insoluble
}}
|Section3={{Chembox Hazards
| MainHazards =
| GHS_ref =
| GHSPictograms = {{GHS07}}{{GHS08}}
| GHSSignalWord = Danger
| HPhrases = {{HPhrases|302|315|319|334|335}}
| PPhrases = {{PPhrases|301|312|330|302|352|305|351|338|}}
}}
|Section6={{Chembox Related
| OtherCompounds =
}}
}}
Indium monoiodide is a binary inorganic compound of indium metal and iodine with the chemical formula {{chem2|InI}}.{{cite web |title=Indium(I) Iodide |url=https://www.americanelements.com/indium-i-iodide-13966-94-4 |publisher=American Elements |access-date=29 March 2024 |language=en}}{{cite web |title=Indium(I) iodide |url=https://www.sigmaaldrich.com/RU/en/product/aldrich/578606 |publisher=Sigma Aldrich |access-date=29 March 2024}}
Preparation
Indium(I) iodide can be obtained by reacting indium with iodine or indium(III) iodide in vacuum at 300 °C to 400 °C or with mercury(II) iodide at 350 °C.{{cite journal |last1=Gasanov |first1=A. A. |last2=Lobachev |first2=E. A. |last3=Kuznetsov |first3=S. V. |last4=Fedorov |first4=P. P. |title=Indium monoiodide: Preparation and deep purification |journal=Russian Journal of Inorganic Chemistry |date=1 November 2015 |volume=60 |issue=11 |pages=1333–1336 |doi=10.1134/S0036023615110066 |url=https://link.springer.com/article/10.1134/S0036023615110066 |access-date=29 March 2024 |language=en |issn=1531-8613}}
:{{chem2|2In + I2 -> 2InI}}{{cite book |last1=Rieke |first1=Reuben D. |title=Chemical Synthesis Using Highly Reactive Metals |date=30 November 2016 |publisher=John Wiley & Sons |isbn=978-1-118-92914-8 |page=242 |url=https://books.google.com/books?id=JKihDQAAQBAJ&dq=Indium+monoiodide&pg=PA242 |access-date=29 March 2024 |language=en}}
:{{chem2|2In + InI3 -> 3InI}}
:{{chem2|2In + HgI2 -> 2InI + Hg}}
Physical properties
Indium(I) iodide forms a brown-red diamagnetic solid. Its melt is black. The compound has an orthorhombic crystal structure in the space group Cmcm (space group no. 63) with the lattice parameters a = 475 pm, b = 1276 pm, c = 491 pm.{{cite journal |last1=Fedorov |first1=P P |last2=Popov |first2=A I |last3=Simoneaux |first3=R L |title=Indium iodides |journal=Russian Chemical Reviews |date=31 March 2017 |volume=86 |issue=3 |pages=240–268 |doi=10.1070/RCR4609|bibcode=2017RuCRv..86..240F |url=https://www.russchemrev.org/RCR4609pdf}}
Chemical properties
Decomposes slowly with hot water:
:{{chem2|2InI + H2O -> InOH + HI}}
Reacts with water in the presence of oxygen:{{cite book |last1=Satya |first1=Prakash |title=Advanced Chemistry of Rare Elements |date=2013 |publisher=S. Chand Publishing |isbn=978-81-219-4254-6 |page=244 |url=https://books.google.com/books?id=WB_4DwAAQBAJ&dq=Indium+monoiodide&pg=PA244 |access-date=29 March 2024 |language=en}}
:{{chem2|2InI + O + 3H2O -> 2In(OH)2 + 2HI}}
References
{{Reflist}}
{{Iodine compounds}}
{{Indium compounds}}
{{Iodides}}