Promethium(III) iodide
{{Chembox
| Name = Promethium(III) iodide
| OtherNames = Promethium iodide
Promethium triiodide
| Section1 = {{Chembox Identifiers
| CASNo = 13818-73-0
| CASNo_Ref = {{cascite|correct|CAS}}
| PubChem = 129629045
| StdInChI=1S/3HI.Pm/h3*1H;/q;;;+3/p-3
| StdInChIKey=CCGSLKOPQLRTPK-UHFFFAOYSA-K
| SMILES = [I-].[I-].[I-].[Pm+3]
}}
| Section2 = {{Chembox Properties
| Formula = PmI3
| MolarMass =
| Density =
| Solubility =
}}
| Section8 = {{Chembox Related
| OtherAnions = promethium(III) fluoride
promethium(III) chloride
promethium(III) bromide
| OtherCations = neodymium(III) iodide
samarium(III) iodide
| OtherCompounds = promethium diiodide
}}
}}
Promethium(III) iodide is an inorganic compound, with the chemical formula of PmI3. It is a red radioactive solid with a melting point of 695 °C.
Preparation
Promethium(III) iodide is obtained by reacting anhydrous hydrogen iodide and promethium(III) chloride at a high temperature:
: PmCl3 + 3 HI → PmI3 + 3 HCl{{cite journal|first1=W. R.|last1= Wilmarth|first2= G. M.|last2= Begun|first3= R. G.|last3=Haire|display-authors=et al|title=Raman spectra of Pm2O3, PmF3, PmCl3, PmBr3 and PmI3.|journal=Journal of Raman Spectroscopy|year=2005|volume=19|issue=4}}
From the reaction of a HI-H2 mixture and promethium oxide (Pm2O3), promethium(III) iodide cannot be produced, and only promethium oxyiodide (PmOI) can be obtained. Promethium oxide reacts with molten aluminum iodide at 500°C to form promethium iodide.{{Cite journal |last=Salzberg |first=H. W. |date=1958 |title=Gmelins Handbook of Inorganic Chemistry |url=http://dx.doi.org/10.1149/1.2428830 |journal=Journal of the Electrochemical Society |volume=105 |issue=6 |pages=112C |doi=10.1149/1.2428830 |issn=0013-4651|url-access=subscription }}{{cite journal|last1=Weigel|first1=Fritz|journal=Radiochimica Acta|title=Die Chemie des Promethiums...|page= 591}} more complete reference required
References
{{reflist}}
{{Promethium compounds}}
{{Iodides}}
{{Lanthanide halides}}
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