Protactinium tetraiodide
Protactinium tetraiodide is a binary inorganic compound of protactinium metal and iodine with the chemical formula.
Synthesis
Protactinium tetraiodide can be prepared by reducing the pentaiodide with aluminum at about 400 °C:Also, a reaction of hydrogen reduction of protactinium(V) iodide at 400 °C:
Physical properties
The compound forms black or dark green crystals. The structure is not known.Chemical properties
The compound is oxidized by antimony trioxide when heated in a vacuum:The compound also reacts with quartz when heated: