curium(III) iodide
{{Chembox
| Name = Curium(III) iodide
| ImageFile = Kristallstruktur Bismut(III)-iodid.png
| ImageSize = 200px
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| IUPACName =
| OtherNames = Curium triiodide
| Section1 = {{Chembox Identifiers
| CASNo = 14696-85-6
| PubChem = 101943143
| PubChem_Comment = (charge error)
| ChemSpiderID =
| EINECS =
| DTXSID =
| SMILES = [I-].[I-].[I-].[Cm+3]
| StdInChI= 1S/Cm.3HI/h;3*1H/q+3;;;/p-3
| StdInChIKey= UVXBBRRWLDYFRE-UHFFFAOYSA-K
}}
| Section2 = {{Chembox Properties
| Cm=1|I=3
| Appearance = white crystals
| Solubility =
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| Section4 = {{Chembox Structure
| CrystalStruct =
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| Section7 = {{Chembox Hazards
| MainHazards =
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|Section6={{Chembox Related
| OtherCompounds = Americium triiodide
}}
}}
Curium(III) iodide is the chemical compound with the formula {{chem2|CmI3}}.{{cite book |last1=Lumetta |first1=Gregg J. |last2=Thompson |first2=Major C. |last3=Penneman |first3=Robert A. |last4=Eller |first4=P. Gary |title=The Chemistry of the Actinide and Transactinide Elements |date=2006 |publisher=Springer Netherlands |isbn=978-1-4020-3598-2 |pages=1397–1443 |chapter-url=https://link.springer.com/chapter/10.1007/1-4020-3598-5_9 |access-date=3 July 2023 |language=en |chapter=Curium|doi=10.1007/1-4020-3598-5_9 }}{{cite book |last1=Brown |first1=David |last2=Canterford |first2=J. H. |last3=Colton |first3=Ray |title=Halides of the Transition Elements: Halides of the lanthanides and actinides, by D. Brown |date=1968 |publisher=Wiley |isbn=978-0-470-10840-6 |page=260 |url=https://books.google.com/books?id=EHZMAAAAYAAJ&q=curium+triiodide |access-date=3 July 2023 |language=en}}{{cite web |title=WebElements Periodic Table » Curium » curium triiodide |url=https://winter.group.shef.ac.uk/webelements/compounds/curium/curium_triiodide.html |publisher=winter.group.shef.ac.uk |access-date=3 July 2023}} Since all isotopes of curium are only artificially produced, the compound has no natural occurrence.
Synthesis
Elemental curium and iodine can be reacted to synthesize curium(III) iodide.{{cite journal |last1=Seaborg |first1=G. T. |last2=James |first2=R. A. |last3=Ghiorso |first3=A. |title=The Transuranium Elements |journal=Science |date=1949 |volume=104 |issue=2704 |publisher=McGraw-Hill |pages=1554–1571 |jstor=1675046 |url=https://www.jstor.org/stable/1675046 |access-date=3 July 2023}}
::{{chem2|2Cm + 3I2 -> 2CmI3}}
Also by the reaction of curium(III) chloride with ammonium iodide:{{cite journal |last1=Asprey |first1=L. B. |last2=Keenan |first2=T. K. |last3=Kruse |first3=F. H. |title=Crystal Structures of the Trifluorides, Trichlorides, Tribromides, and Triiodides of Americium and Curium |journal=Inorganic Chemistry |date=July 1965 |volume=4 |issue=7 |pages=985–986 |doi=10.1021/ic50029a013 |s2cid=96551460 |url=https://digital.library.unt.edu/ark:/67531/metadc1035960/m2/1/high_res_d/4582276.pdf |access-date=3 July 2023 |language=en |issn=0020-1669}}{{cite book |last1=Koch |first1=Günter |title=Transurane: Teil C: Die Verbindungen |date=5 October 2013 |publisher=Springer-Verlag |isbn=978-3-662-11547-3 |page=154 |url=https://books.google.com/books?id=WCi2BgAAQBAJ&dq=curium+triiodide&pg=PA154 |access-date=3 July 2023 |language=de}}
::{{chem2|CmCl3 + 3NH4I -> CmI3 + 3NH4Cl}}
==Physical properties==
Curium(III) iodide is a colorless ionic compound consisting of Cm3+ and I− ions. It forms white crystals the hexagonal crystal system in the space group R3 (space group no. 148) with the lattice parameters a = 744 pm and c = 2040 pm with six units per unit cell. Its crystal structure is isotypic with that of bismuth(III) iodide.{{cite book |last1=Macintyre |first1=Jane E. |title=Dictionary of Inorganic Compounds |date=23 July 1992 |publisher=CRC Press |isbn=978-0-412-30120-9 |page=3046 |url=https://books.google.com/books?id=9eJvoNCSCRMC&dq=curium+triiodide&pg=PA3046 |access-date=3 July 2023 |language=en}}
References
{{reflist}}
{{Curium compounds}}
{{Iodides}}
{{Actinide halides}}