Polymorphism in Zintl Phases ACd4Pn3: Modulated Structures of NaCd4Pn3 with Pn: P, As.

Single crystals of NaCd4P3 and NaCd4As3 are prepared by short-way transport from stoichiometric amounts of the elements using CdI2 as mineralizer (evacuated silica tubes, 973 K, 4—7 d).