Tetrahedral Coordination of Palladium in Ta2Pd3Te5: A Compound with a “Stuffed” Ta2NiSe5 Structure

Strong PdTa interactions stabilize the unusual tetrahedral coordination of palladium in the layer compound Ta2Pd3Te5. This compound is accessible by the reaction of the elements at 850/800°C; the structure illustrated below shows a parallel projection of a layer along [010]. Large, medium, and small circles represent Te, Ta, and Pd, respectively.