Platinum(II) iodide

Platinum(II) iodide

beta-PtI2 (at room temperature)
Names
IUPAC name diiodoplatinum
Other names Platinum diiodide, platinum(2+) diiodide
Identifiers
CAS Number	7790-39-8
3D model (JSmol)	Interactive image
ChemSpider	74229
ECHA InfoCard	100.029.277
EC Number	232-204-2
PubChem CID	24852372
UNII	SMK137T046
CompTox Dashboard (EPA)	50999091
InChI InChI=1S/2HI.Pt/h2*1H;/q;;+2/p-2 Key: ZXDJCKVQKCNWEI-UHFFFAOYSA-L
SMILES [Pt+2].[I-].[I-]
Properties
Chemical formula	I2Pt
Molar mass	448.893 g·mol−1
Appearance	black crystals
Density	6.403 g/cm3
Melting point	360 °C (680 °F; 633 K)
Solubility in water	insoluble
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Platinum(II) iodide is a binary inorganic compound of platinum and iodine with the chemical formula PtI
_². ^{[1] [2] [3]}

Synthesis

Production of platinum(II) iodide can be by heating of platinum(II) chloride with potassium iodide:

PtCl₂ + 2KI → PtI₂ + 2KCl

Chemical properties

Platinum(II) iodide decomposes when heated: ^[4]

Ptl₂ → Pt + I₂

Physical properties

Platinum(II) iodide forms black crystals ^[5] of several modifications. It is insoluble in water, ethanol, acetone, or ether, but is soluble in ethylamine and hydrogen iodide. ^[6]

Related compounds

Potassium tetraiodoplatinate (K₂PtI₄) is a soluble derivative of PtI₂. ^[7]

References

1. "Platinum(II) Iodide". American Elements . Retrieved 17 April 2023.
2. "Platinum(II) iodide". Sigma Aldrich . Retrieved 17 April 2023.
3. "Platinum(II) iodide | CAS 7790-39-8". Santa Cruz Biotechnology . Retrieved 17 April 2023.
4. "Platinum(II) iodide, Premion , 99.99% (metals basis), Pt 43.0% min, Thermo Scientific Chemicals | Fisher Scientific". Fisher Scientific . Retrieved 17 April 2023.
5. Lide, David R. (19 June 2003). CRC Handbook of Chemistry and Physics. CRC Press. p. 4-81. ISBN   978-0-8493-0594-8 . Retrieved 17 April 2023.
6. "12170 Platinum(II) iodide, Premion®, 99.99% (metals basis), Pt 43.0% min". Alfa Aesar . Retrieved 17 April 2023.
7. Olsson, Lars-Fride (1989). "Dipotassium Tetraiodoplatinate(II) Dihydrate". Inorganic Syntheses. Vol. 25. pp. 98–100. doi:10.1002/9780470132562.ch21. ISBN   978-0-471-61874-4.