Chemistry:Berkelium tetrafluoride
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| Names | |
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| Other names
berkelium(IV) fluoride
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| Identifiers | |
3D model (JSmol)
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| Properties | |
| BkF4 | |
| Molar mass | 323 g·mol−1 |
| Appearance | yellow-green solid |
| practically insoluble | |
| Structure | |
| monoclinic | |
| Related compounds | |
Related compounds
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Curium(III) fluoride, berkelium trifluoride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Berkelium tetrafluoride is a binary inorganic compound of berkelium and fluorine with the chemical formula BkF
4.[1]
Synthesis
Berkelium tetrafluoride may be formed by the fluorination of berkelium trioxide, dioxide, or trifluoride with elemental fluorine at elevated temperatures:
- 2Bk
2O
3 + 8F
2 → 4BkF
4 + 3O
2 - 2BkF
3 + F
2 → 2BkF
4
- 2Bk
Physical properties
Berkelium(IV) fluoride forms light brown crystals of monoclinic crystal structure of uranium tetrafluoride type. Cell parameters: a = 1.2396 nm, b = 1.0466 nm, c = 0.8118 nm, angle β = 126.33°.[2][3]
Chemical properties
Berkelium tetrafluoride is reduced by lithium at elevated temperatures to metallic berkelium:[4]
- BkF
4 + 4Li → Bk + 4LiF
- BkF
References
- ↑ Cunningham, B. B. (January 1959). "Berkelium and californium" (in en). Journal of Chemical Education 36 (1): 32. doi:10.1021/ed036p32. ISSN 0021-9584. https://pubs.acs.org/doi/10.1021/ed036p32. Retrieved 5 April 2023.
- ↑ Keenan, Thomas K.; Asprey, Larned B. (February 1969). "Lattice constants of actinide tetrafluorides including berkelium" (in en). Inorganic Chemistry 8 (2): 235–238. doi:10.1021/ic50072a011. ISSN 0020-1669. https://pubs.acs.org/doi/abs/10.1021/ic50072a011. Retrieved 5 April 2023.
- ↑ Asprey, L. B.; Keenan, T. K. (1 September 1968). "The preparation of berkelium tetrafluoride and its lattice parameters (1)" (in en). Inorganic and Nuclear Chemistry Letters 4 (9): 537–541. doi:10.1016/0020-1650(68)80028-5. ISSN 0020-1650. https://www.sciencedirect.com/science/article/abs/pii/0020165068800285. Retrieved 5 April 2023.
- ↑ Edelstein, Norman M. (11 September 2013) (in en). Actinides in Perspective: Proceedings of the Actinides—1981 Conference, Pacific Grove, California, USA, 10-15 September 1981. Elsevier. p. 334. ISBN 978-1-4831-9051-8. https://books.google.com/books?id=hlz-BAAAQBAJ&dq=Berkelium+tetrafluoride&pg=PA334. Retrieved 5 April 2023.
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