Praseodymium monoselenide

Praseodymium monoselenide is a compound with the chemical formula PrSe. It forms crystals.

Preparation
Praseodymium monoselenide can be prepared by directly reacting praseodymium and selenium at 2100 °C:


 * Pr + Se -> PrSe

The temperature at which selenium and praseodymium start to react when they come into contact is 620 K.

Properties
Praseodymium monoselenide forms cubic crystals, space group Fm$\overline{3}$m, unit cell parameters a = 0.5741 nm, Z = 4, and a structure similar to that of sodium chloride.

The compound melts congruently at 2100 °C.