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Z. Naturforsch. 2013,
68b, 95 – 98
doi:10.5560/ZNB.2013-2314
Ca2Pd2Cd with W2B2Co-type Structure
Institut für Anorganische und Analytische Chemie, Universität Münster, Corrensstrasse 30, D-48149 Münster, Germany
Reprint requests to R. Pöttgen. E-mail:
pottgen@uni-muenster.de
Received November 29, 2012 / published online January 10, 2013
Ca2Pd2Cd was synthesized by high-frequency melting of the elements in a sealed niobium ampoule. Its structure was refined from single-crystal X-ray diffractometer data: W2B2Co type, Immm, a = 444.58(6), b = 590.25(6), c = 863.07(10) pm, wR2 = 0.0252, 305 structure factors, 13 variables. The palladium and cadmium atoms build up two-dimensional [Pd2Cd] networks which consist of Pd4Cd2 hexagons and Pd2Cd2 rectangles with 272.7 pm Pd–Pd and 273.2 pm Pd–Cd. The calcium atoms are coordinated by one Pd4Cd2 and one
Pd2Cd2 unit. The structure of Ca2Pd2Cd is compared to that of Ce2Pd2Cd with its tetragonal Mo2B2Fe type.
Key words: Cadmium, Intermetallics, Crystal Chemistry, Palladium, Calcium