Darstellung und Kristallstrukturen der Verbindungen CaPtGa,CaPtIn und CaPd0,4Ga1,6

Preparation and Crystal Structures of the Compounds CaPtGa, CaPtIn and CaPd_0.4Ga_1.6 The new compounds CaPtGa, CaPtIn and CaPd_0.4Ga_1.6 were prepared by heating appropriate mixtures of the elements under an Ar-atmosphere. The results of the structural analysis of single crystals by means of X-ray diffraction are given in the section ?Inhaltsübersicht”?. CaPtGa and CaPtIn are isotypic and form the TiNiSi type structure (Pnma), where the Pt-atoms have a distorted tetrahedral environment consisting of Ga- resp. In-atoms. CaPd_0.4Ga_1.6 crystallizes in the CeCu₂-type structure (Imma), the Cu positions being statistically occupied by Pd- and Ga-atoms.