Potassium tetrafluoronickelate

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Potassium tetrafluoronickelate
Identifiers
3D model (
JSmol
)
ChemSpider
EC Number
  • 237-595-3
  • InChI=1S/4FH.2K.Ni/h4*1H;;;/q;;;;2*+1;+2/p-4
    Key: UIRGKRRTSXFSTG-UHFFFAOYSA-J
  • F[Ni-2](F)(F)F.[K+].[K+]
Properties
F4K2Ni
Molar mass 212.8836 g·mol−1
Appearance green solid
Density 3.36 g/cm3
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Potassium tetrafluoronickelate is the

tetrafluoronickelate. It is prepared by melting a mixture of nickel(II) fluoride, potassium fluoride, and potassium bifluoride.[1] The compound adopts a perovskite-like structure consisting of layers of octahedral Ni centers interconnected by doubly bridging fluoride ligands. The layers are interconnected by potassium cations. It is one of the principal Ruddlesden-Popper phases. Early discoveries on cuprate superconductors focused on compounds with structures closely related to K2NiF4, e.g. lanthanum cuprate and derivative lanthanum barium copper oxide
.

Nickel difluoride layers that comprise K2NiF4.

References

  1. doi:10.1107/S0108768193003246
    .
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