Die durch chemischen Transport ausgehend von einer 1:1:3‐Mischung der Verbindungen Cd3P2, CdP2 und CdCl2 dargestellte Titelverbindung kristallisiert in der Raumgruppe Pa3 mit Z=4.

Cd2AsC12, M r = 370.63, crystallizes in space group P2~/c with four formula units per cell of dimensions: a = 7.858 (4), b = 9.193 (9), c = 8.189 (5) A, fl = 119.95 (8) ° , V= 512.6 A3, Z = 4, dm=4.86 (3),de= 4.80 Mg m -3. The structure was refined by the least-squares technique, based on 2835 independent reflexions measured on an automatic diffractometer. The final R w is 0.099. The structure is built up of ASECd 6 groups characterized by As-As bonds. These As2Cd 6 groups share a Cd-Cd edge forming layers along b. The cohesion of the structure is ensured by the Cl atoms.

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