Chemistry:Polonium tetraiodide
From HandWiki
| |
| Names | |
|---|---|
| Other names
Polonium(IV) iodide
| |
| Identifiers | |
3D model (JSmol)
|
|
PubChem CID
|
|
| |
| |
| Properties | |
| PoI4[1] | |
| Molar mass | 716.6 g/mol |
| Appearance | Black crystals |
| Melting point | 200 °C (392 °F; 473 K) |
| Insoluble[2] | |
| Related compounds | |
Related compounds
|
Chromium(III) sulfide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Tracking categories (test):
Polonium tetraiodide is a binary inorganic compound of polonium and iodine with the chemical formula PoI4.[3][4] The compound forms volatile black crystals. [5]
Synthesis
1. Action of iodine vapor on polonium metal:
- [math]\ce{ Po + 2I2 -> PoI4 }[/math]
2. Dissolution of polonium dioxide in hydroiodic acid:[6]
- [math]\ce{ PoO2 + 4HI -> PoI4 + 2H2O }[/math]
Properties
Physical properties
The compound forms black crystals that are insoluble in water.
Chemical properties
The compound reacts with hydroiodic acid to form hexaiodopolonic acid:
- [math]\ce{ PoI4 + 2HI -> H2[PoI6] }[/math]
It can be reduced by hydrogen sulfide to yield polonium metal.[5] It decomposes on heating.
References
- ↑ Macintyre, Jane E. (23 July 1992) (in en). Dictionary of Inorganic Compounds. CRC Press. p. 3510. ISBN 978-0-412-30120-9. https://books.google.com/books?id=9eJvoNCSCRMC&dq=Polonium+tetraiodide&pg=PA3510. Retrieved 2 November 2021.
- ↑ Schweitzer, George K.; Pesterfield, Lester L. (14 January 2010) (in en). The Aqueous Chemistry of the Elements. Oxford University Press. p. 134. ISBN 978-0-19-539335-4. https://books.google.com/books?id=-oI8DwAAQBAJ&dq=Polonium(IV)+iodide+PoI4&pg=PA243. Retrieved 2 November 2021.
- ↑ Brown, Susan A.; Brown, Paul L. (25 September 2019) (in en). The Aqueous Chemistry of Polonium and the Practical Application of its Thermochemistry. Elsevier. p. 24. ISBN 978-0-12-819309-9. https://books.google.com/books?id=eTqvDwAAQBAJ&dq=Polonium+tetraiodide&pg=PA24. Retrieved 2 November 2021.
- ↑ Schmidt, M.; Siebert, W.; Bagnall, K.W. (2013). The Chemistry of Sulphur, Selenium, Tellurium and Polonium: Pergamon Texts in Inorganic Chemistry. Elsevier. pp. 961–962. ISBN 978-1483158655.
- ↑ 5.0 5.1 K. W. Bagnall, R. W. M. D'Eye, J. H. Freeman (1956). "657. The polonium halides. Part III. Polonium tetraiodide". Journal of the Chemical Society (Resumed) (J. Chem. Soc.): 3385–3389. doi:10.1039/JR9560003385.
- ↑ M. Schmidt, W. Siebert, K. W. Bagnall (2013). The Chemistry of Sulphur, Selenium, Tellurium and Polonium: Pergamon Texts in Inorganic Chemistry. Elsevier. pp. 961–962. ISBN 978-1483158655.
| HI | He | ||||||||||||||||
| LiI | BeI2 | BI3 | CI4 | NI3 | I2O4, I2O5, I4O9 |
IF, IF3, IF5, IF7 |
Ne | ||||||||||
| NaI | MgI2 | AlI3 | SiI4 | PI3, P2I4 |
S | ICl, ICl3 |
Ar | ||||||||||
| KI | CaI2 | Sc | TiI4 | VI3 | CrI3 | MnI2 | FeI2 | CoI2 | NiI2 | CuI | ZnI2 | Ga2I6 | GeI2, GeI4 |
AsI3 | Se | IBr | Kr |
| RbI | SrI2 | YI3 | ZrI4 | NbI5 | Mo | Tc | Ru | Rh | Pd | AgI | CdI2 | InI3 | SnI4, SnI2 |
SbI3 | TeI4 | I | Xe |
| CsI | BaI2 | HfI4 | TaI5 | W | Re | Os | Ir | Pt | AuI | Hg2I2, HgI2 |
TlI | PbI2 | BiI3 | Po | AtI | Rn | |
| Fr | RaI2 | Rf | Db | Sg | Bh | Hs | Mt | Ds | Rg | Cn | Nh | Fl | Mc | Lv | Ts | Og | |
| ↓ | |||||||||||||||||
| La | Ce | Pr | Nd | Pm | SmI2 | Eu | Gd | TbI3 | Dy | Ho | Er | Tm | Yb | Lu | |||
| Ac | ThI4 | Pa | UI3, UI4 |
Np | Pu | Am | Cm | Bk | Cf | EsI3 | Fm | Md | No | Lr | |||
 |  |
