Californium(II) iodide
| Names | |
|---|---|
| Other names
Californium diiodide
| |
| Identifiers | |
3D model (
JSmol ) |
|
| |
| |
| Properties | |
| CfI2 | |
| Molar mass | 505 g·mol−1 |
| Appearance | dark purple solid |
| Density | g/cm3 |
| insoluble | |
| Structure | |
| cubic | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
| |
Californium(II) iodide is a binary inorganic compound of californium and iodine with the formula CfI
2.[1]
Synthesis
It can be produced by reducing
californium triiodide with hydrogen in a quartz thin tube at 570 °C:[2]
- 2CfI3 + H2 → 2CfI2 + 2HI
Physical properties
The compound forms a dark purple solid. At slightly higher temperatures, it melts and reacts with the
silica in the thin tube, producing CfOI.[citation needed
]
Californium diiodide has two crystal structures, one is
lattice parameters a = 743.4 ± 1.1 pm and α = 35.83 ± 0.07°; the other is metastable, of CdI
2-type with lattice parameters a = 455.7 ± 0.4 pm and c = 699.2 ± 0.6 pm.[3] Californium diiodide has an absorption band in the wavelength range from 300 to 1100 nm, which proves the existence of Cf(II).[4]
2-type with lattice parameters a = 455.7 ± 0.4 pm and c = 699.2 ± 0.6 pm.[3] Californium diiodide has an absorption band in the wavelength range from 300 to 1100 nm, which proves the existence of Cf(II).[4]
References
- ^ "WebElements Periodic Table » Californium » californium dioxide". webelements.com. Retrieved 11 April 2023.
- ISBN 978-1-4832-7868-1. Retrieved 11 April 2023.
- ISBN 978-0-412-30120-9. Retrieved 11 April 2023.
- ISSN 0022-1902. Retrieved 11 April 2023.
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