Curium(III) iodide
Chemical compound
From Wikipedia, the free encyclopedia
Curium(III) iodide is a salt with the formula CmI3.[1][2][3] Since all isotopes of curium are only artificially produced, the compound has no natural occurrence.
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| Names | |
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| Other names
Curium triiodide | |
| Identifiers | |
3D model (JSmol) |
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PubChem CID |
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| Properties | |
| CmI3 | |
| Molar mass | 628 g·mol−1 |
| Appearance | white crystals |
| Related compounds | |
Related compounds |
Americium triiodide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Synthesis
Elemental curium and iodine can be reacted to synthesize curium(III) iodide.[4]
- 2Cm + 3I2 → 2CmI3
Also by the reaction of curium(III) chloride with ammonium iodide:[5][6]
- 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.[5][7]