Californium(III) iodide
{{Chembox
| ImageFile = Kristallstruktur Bismut(III)-iodid.png
| ImageCaption =
| IUPACName =
| OtherNames = Californium triiodide{{cite web |title=WebElements Periodic Table » Californium » californium triiodide |url=https://webelements.com/compounds/californium/californium_triiodide.html |publisher=webelements.com |access-date=11 April 2023}}
| Section1 = {{Chembox Identifiers
| CASNo = 20758-81-0
| PubChem =
| ChemSpiderID =
| EINECS =
| DTXSID =
| SMILES = [Cf+3].[I-].[I-].[I-]
| StdInChI = 1S/Cf.3HI/h;3*1H/q+3;;;/p-3
| StdInChIKey = SJKPTAUDVXCUTB-UHFFFAOYSA-K
}}
| Section2 = {{Chembox Properties
| Cf=1|I=3
| Appearance = red-orange solid
| Density = g/cm3
| Solubility = insoluble
| MeltingPtC =
| BoilingPtC = 800
}}
| Section4 = {{Chembox Structure
| CrystalStruct = trigonal
}}
| Section7 = {{Chembox Hazards
| MainHazards =
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|Section6={{Chembox Related
| OtherCompounds = Einsteinium(III) iodide
}}
}}
Californium(III) iodide is a binary inorganic compound of californium and iodine with the formula {{chem|Cf|I|3}}.{{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=2826 |url=https://books.google.com/books?id=9eJvoNCSCRMC&dq=Californium+diiodide&pg=PA2826 |access-date=11 April 2023 |language=en}}{{cite book |title=ERDA Energy Research Abstracts |date=1977 |publisher=ERDA Technical Information Center, etc.; Washington |page=565 |url=https://books.google.com/books?id=mZNi2Dp7Fp0C&dq=Californium+triiodide&pg=PA565 |access-date=11 April 2023 |language=en}}
Synthesis
Californium triiodide can be prepared in microgram quantities under high vacuum. It can be prepared at 500 °C from californium(III) hydroxide and hydrogen iodide:
::{{chem2|Cf(OH)3 + 3HI -> CfI3 + 3H2O}}
Physical properties
The compound forms a red-orange solid. The triiodide sublimes at ~800 °C without melting. It crystallizes in the trigonal crystal structure in the space group R3 (No. 148) with the lattice parameters a = 758.7 pm and c = 2081.4 pm with six formula units per unit cell. Its crystal structure is isotypic with that of bismuth(III) iodide.
References
{{reflist}}
{{Californium compounds}}
{{Iodides}}
{{Actinide halides}}
Category:Californium compounds
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