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

Chemical compound

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

## Synthesis

[edit]

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

PtCl2 \+ 2KI → PtI2 \+ 2KCl

## Chemical properties

[edit]

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

Ptl2 → Pt + I2

## Physical properties

[edit]

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

[edit]

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

## References

[edit]

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. 25: 98–100\. doi:10.1002/9780470132562.ch21.

* v
* t
* e

Platinum compounds

Pt(−II)|

* Cs2Pt

Pt(0)|

* Pt(PPh3)4

Pt(II)|

* Pt(NH3)2(CO2)2C4H6
* cis-Pt(NH3)2Cl2
* (NH4)2[PtCl4]
* trans-Pt(NH3)2Cl2
* K2Pt(CN)4
* Pt(NH3)4PtCl4
* Pt(NH3)2CO2CH2O
* (Cy(NH2)2)PtC2O4
* NH3PtCl2(PyrMe)
* Pt(OAc)2
* PtBr2
* PtCl2
* PtF2
* PtI

* PtP2
* K2PtCl4
* [(PtCl(NH3)2(C6H12(NH2)2))Pt(NH3)2](NO3)4
* Pt(OH)2
* PtSm
* Pt(C5H7O2)2
* PtS

| Organoplatinum(II) compounds|

* PtCl2(Cod)
* Pt(CNO)2
* KPtCl3C2H4

|

Pt(IV)|

* PtO2
* (NH4)2PtCl6
* H2PtCl6
* PtBr4
* PtCl4
* PtF4
* K2PtCl6
* (NH4)2[PtI6]
* Pt(OAc)2Cl2(NH3)(NH2Cy)
* Na2PtCl6
* Pt(OH)4
* PtI4
* PtS2
* PtSe2

Pt(V)|

* PtF5
* O2PtF6
* XePtF6

Pt(VI)|

* PtF6

* v
* t
* e

Salts and covalent derivatives of the iodide ion

| HI
+H |  |  |  | He

|
|
|
|

LiI | BeI2 | BI3
+BO3 | CI4
+C | NI3
NH4I
+N | I2O4
I2O5
I2O6
I4O9 | IF
IF3
IF5
IF7 | Ne
NaI | MgI2 | AlI
AlI3 | SiI4 | PI3
P2I4

PI5 | S2I2 | ICl
ICl3 | Ar
KI | CaI2 |  | ScI3 | TiI2
TiI3
TiI4 | VI2
VI3 | CrI2
CrI3
CrI4 | MnI2 | FeI2
FeI3 | CoI2 | NiI2
-Ni | CuI | ZnI2 | GaI
GaI3 | GeI2
GeI4
+Ge | AsI3
As2I4
+As | Se  | IBr
IBr3 | Kr
RbI
RbI3 | SrI2 |  | YI3 | ZrI2
ZrI3
ZrI4 | NbI4
NbI5 | MoI2
MoI3 | TcI3 | RuI3 | RhI3 | PdI2 | AgI | CdI2 | InI
InI3 | SnI2
SnI4 | SbI3
+Sb | TeI4
+Te | I−

3 | Xe
CsI
CsI3 | BaI2 |  | LuI3 | HfI3
HfI4 | TaI4
TaI5 | WI2
WI3
WI4 | ReI3
ReI
4 | OsI
OsI2
OsI3 | IrI3
IrI
4 | PtI2
PtI4 | AuI
AuI3 | Hg2I2
HgI2 | TlI
TlI3 | PbI2 | BiI3 | PoI2
PoI4 | AtI | Rn
Fr  | RaI2 |  | Lr  | Rf  | Db  | Sg  | Bh  | Hs  | Mt  | Ds  | Rg  | Cn  | Nh  | Fl  | Mc  | Lv  | Ts  | Og
| ↓  |  |
| LaI2
LaI3 | CeI2
CeI3 | PrI2
PrI3 | NdI2
NdI3 | PmI3 | SmI2
SmI3 | EuI2
EuI3 | GdI2
GdI3 | TbI3 | DyI2
DyI
3 | HoI3 | ErI3 | TmI2
TmI3 | YbI2
YbI3
AcI3 | ThI2
ThI3
ThI4 | PaI4
PaI5 | UI3
UI4 | NpI3 | PuI3 | AmI2
AmI3 | CmI3 | BkI
3 | CfI

CfI
3 | EsI2
EsI3 | Fm  | Md  | No

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