Sur une variete haute pression de PdF2 de type fluorine

A fluorite-type form of PdF₂ has been obtained from the rutile-type variety at 25°C under 50 kb and quenched to room conditions. It is the first d-element fluoride presenting this structure so far isolated under normal conditions. The transition corresponds to a volume decrease $\text{δ}\text{V}\text{V}{}_{\mathrm{rutile}}$ of 11 %. The cell parameter $\text{a}\text{= 5.322 ± 0.002}\text{A}\text{?}$ supposes a PdF distance of 2.16 Å. The thermal variation of the magnetic susceptibility suggests an antiferromagnetic behavior with an ordering temperature close to 200 K. The rutile → fluorite transition has been followed by resistivity vs. pressure measurements. Fluorite-type PdF₂ presents at room conditions a resistivity of 10⁵Ω.cm, 10⁵ lower than the rutile form.