Berkelium tetrafluoride

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Berkelium tetrafluoride
Names
Other names
berkelium(IV) fluoride
Identifiers
3D model (
JSmol
)
  • InChI=1S/Bk.4FH/h;4*1H/q+4;;;;/p-4
    Key: RCTCKHUWZHELJP-UHFFFAOYSA-J
  • [Bk+4].[F-].[F-].[F-].[F-]
Properties
BkF4
Molar mass 323 g·mol−1
Appearance yellow-green solid
practically insoluble
Structure
monoclinic
Related compounds
Related compounds
berkelium trifluoride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Berkelium tetrafluoride is a binary inorganic compound of berkelium and fluorine with the chemical formula BkF4.[1]

Synthesis

Berkelium tetrafluoride may be formed by the fluorination of berkelium trioxide, dioxide, or trifluoride with elemental fluorine at elevated temperatures:

2Bk2O3 + 8F2 → 4BkF4 + 3O2
2BkF3 + F2 → 2BkF4

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]

BkF4 + 4Li → Bk + 4LiF

References

  1. ISSN 0021-9584
    . Retrieved 5 April 2023.
  2. ISSN 0020-1669
    . Retrieved 5 April 2023.
  3. ISSN 0020-1650
    . Retrieved 5 April 2023.
  4. ISBN 978-1-4831-9051-8
    . Retrieved 5 April 2023.
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