Neptunium(IV) fluoride


Neptunium fluoride or neptunium tetrafluoride is a chemical compound of neptunium and fluorine with the formula NpF4.

Synthesis

Neptunium fluoride can be prepared by reacting neptunium fluoride or neptunium dioxide with a gas mixture of oxygen and hydrogen fluoride at 500 °C:
It can also be prepared by treating neptunium dioxide with HF gas: