• Source: Praseodymium arsenide

      • Praseodymium arsenide is a binary inorganic compound of praseodymium and arsenic with the formula PrAs.


      Preparation


      Praseodymium arsenide can be prepared by heating praseodymium and arsenic:






      P
      r
      +
      A
      s



      →

      T




      P
      r
      A
      s




      {\displaystyle {\mathsf {Pr+As\ {\xrightarrow {T}}\ PrAs}}}



      Physical properties


      Praseodymium arsenide forms cubic crystals, space group F m3m, cell parameters a = 0.6009 nm, Z = 4, and structure like sodium chloride. When heated, it decomposes into arsenic and Pr4As3.
      At a pressure of 27 GPa, a phase transition to the tetragonal crystal system occurs.


      See also


      Praseodymium antimonide
      Praseodymium bismuthide


      References

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