Californium(III) iodide

Last updated
Californium(III) iodide
Kristallstruktur Bismut(III)-iodid.png
Names
Other names
Californium triiodide [1]
Identifiers
3D model (JSmol)
  • InChI=1S/Cf.3HI/h;3*1H/q+3;;;/p-3
    Key: SJKPTAUDVXCUTB-UHFFFAOYSA-K
  • [Cf+3].[I-].[I-].[I-]
Properties
CfI3
Molar mass 632 g·mol−1
Appearancered-orange solid
Density g/cm3
Boiling point 800 °C (1,470 °F; 1,070 K)
insoluble
Structure
trigonal
Related compounds
Related compounds
 Einsteinium(III) iodide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Californium(III) iodide is a binary inorganic compound of californium and iodine with the formula CfI
3. [2] [3]

Contents

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:

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.

Related Research Articles

<span class="mw-page-title-main">Californium compounds</span>

Few compounds of californium have been made and studied. The only californium ion that is stable in aqueous solutions is the californium(III) cation. The other two oxidation states are IV (strong oxidizing agents) and II (strong reducing agents). The element forms a water-soluble chloride, nitrate, perchlorate, and sulfate and is precipitated as a fluoride, oxalate or hydroxide. If problems of availability of the element could be overcome, then CfBr2 and CfI2 would likely be stable.

<span class="mw-page-title-main">Berkelium compounds</span> Any chemical compound having at least one berkelium atom

Berkelium forms a number of chemical compounds, where it normally exists in an oxidation state of +3 or +4, and behaves similarly to its lanthanide analogue, terbium. Like all actinides, berkelium easily dissolves in various aqueous inorganic acids, liberating gaseous hydrogen and converting into the trivalent oxidation state. This trivalent state is the most stable, especially in aqueous solutions, but tetravalent berkelium compounds are also known. The existence of divalent berkelium salts is uncertain and has only been reported in mixed lanthanum chloride-strontium chloride melts. Aqueous solutions of Bk3+ ions are green in most acids. The color of the Bk4+ ions is yellow in hydrochloric acid and orange-yellow in sulfuric acid. Berkelium does not react rapidly with oxygen at room temperature, possibly due to the formation of a protective oxide surface layer; however, it reacts with molten metals, hydrogen, halogens, chalcogens and pnictogens to form various binary compounds. Berkelium can also form several organometallic compounds.

<span class="mw-page-title-main">Uranium(III) iodide</span> Chemical compound

Uranium triiodide is an inorganic compound with the chemical formula UI3. It is a black solid that is soluble in water.

<span class="mw-page-title-main">Chromium(III) iodide</span> Chemical compound

Chromium(III) iodide, also known as chromium triiodide, is an inorganic compound with the formula CrI3. It is a black solid that is used to prepare other chromium iodides.

Americium(III) iodide or americium triiodide is the chemical compound, a salt composed of americium and iodine with the formula AmI3.

Californium(III) chloride is an inorganic compound with a chemical formula CfCl3. Like in californium oxide (Cf2O3) and other californium halides, including californium fluoride (CfF3) and iodide (CfI3), the californium atom has an oxidation state of +3.

<span class="mw-page-title-main">Californium(III) bromide</span> Chemical compound

Californium(III) bromide is an inorganic compound, a salt with a chemical formula CfBr3. Like in californium oxide (Cf2O3) and other californium halides, including californium(III) fluoride (CfF3), californium(III) chloride, and californium(III) iodide (CfI3), the californium atom has an oxidation state of +3.

Neodymium(III) iodide is an inorganic salt of iodine and neodymium with the formula NdI3. Neodymium uses the +3 oxidation state in the compound. The anhydrous compound is a green powdery solid at room temperature.

<span class="mw-page-title-main">Berkelium(III) chloride</span> Chemical compound

Berkelium(III) chloride also known as berkelium trichloride, is a chemical compound with the formula BkCl3. It is a water-soluble green salt with a melting point of 603 °C. This compound forms the hexahydrate, BkCl3·6H2O.

<span class="mw-page-title-main">Praseodymium(III) iodide</span> Chemical compound

Praseodymium(III) iodide is an inorganic salt, consisting of the rare-earth metal praseodymium and iodine, with the chemical formula PrI3. It forms green crystals. It is soluble in water.

<span class="mw-page-title-main">Zirconium(III) iodide</span> Chemical compound

Zirconium(III) iodide is an inorganic compound with the formula ZrI3.

<span class="mw-page-title-main">Lanthanum(III) iodide</span> Chemical compound

Lanthanum(III) iodide is an inorganic compound containing lanthanum and iodine with the chemical formula LaI
3.

<span class="mw-page-title-main">Lutetium(III) iodide</span> Chemical compound

Lutetium(III) iodide or lutetium iodide is an inorganic compound consisting of iodine and lutetium, with the chemical formula of LuI3.

<span class="mw-page-title-main">Hafnium(III) iodide</span> Chemical compound

Hafnium(III) iodide is an inorganic compound of hafnium and iodine with the formula Hf I3. It is a black solid.

<span class="mw-page-title-main">Californium(III) fluoride</span> Chemical compound

Californium(III) fluoride is a binary inorganic compound of californium and fluorine with the formula CfF
3

Californium(III) oxide is a binary inorganic compound of californium and oxygen with the formula Cf
2O
3. It is one of the first obtained solid compounds of californium, synthesized in 1958.

Californium(IV) oxide is a binary inorganic compound of californium and oxygen with the formula CfO
2.

Californium(II) iodide is a binary inorganic compound of californium and iodine with the formula CfI
2.

<span class="mw-page-title-main">Berkelium(III) iodide</span> Chemical compound

Berkelium(III) iodide is a binary inorganic compound of berkelium and iodine with the chemical formula BkI3.

<span class="mw-page-title-main">Curium(III) iodide</span> Chemical compound

Curium(III) iodide is the chemical compound with the formula CmI3. Since all isotopes of curium are only artificially produced, the compound has no natural occurrence.

References

  1. ↑ "WebElements Periodic Table » Californium » californium triiodide". webelements.com. Retrieved 11 April 2023.
  2. ↑ Macintyre, Jane E. (23 July 1992). Dictionary of Inorganic Compounds. CRC Press. p. 2826. ISBN   978-0-412-30120-9 . Retrieved 11 April 2023.
  3. ↑ ERDA Energy Research Abstracts. ERDA Technical Information Center, etc.; Washington. 1977. p. 565. Retrieved 11 April 2023.
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