AB2X2-Verbindungen im CaAl2Si2-Typ, III Zur Struktur der Verbindungen CaZn2P2, CaCd2P2, CaZn2As2 und CaCd2As2 / AB2X2 Compounds with the CaAl2Si2 Structure, III The Crystal Structure of CaZn2P2, CaCd2P2, CaZn2As2, and CaCd2As2

As confirmed by X-ray data, the four ternary compounds CaZn2P 2, CaCd2P2, CaZn2As2, and CaCd2As2 crystallize trigonally in a CaAl2Si2-type structure. Some conditions for the existence of this structure type are given.