TaNi 2 .05Te 3 , eine Verbindung mit “aufgefüllter” TaFe 1+ x Te 3 ‐Struktur

TaNi 2.05 Te 3 , a Novel Telluride with “Stuffed” TaFe 1+x Te 3 Structure The novel metal‐rich layer compound TaNi 2.05 Te 3 was synthesized from the elements. Its structure contains TaNi 2 Te 3 layers which are interconnected by Ni atoms on partially occupied tetragonal‐pyramidal sites located between the layers. The title compound and the related telluride TaFe 1.14 Te 3 form a pair of compounds differing only in the occupation or nonoccupation of one 3d‐material atom site. Therefore, the structure of TaNi 2.05 Te 3 , which is stabilized by interstial Ni atoms, can be regarded as a “stuffed” TaFe 1.14 Te 3 type. Pairs of compounds with a similar structural relationship seem to be of general importance in early transition‐metal chalcogenide chemistry. The existence of TaNi 2.05 Te 3 was recently proposed based on the results of extended Hückel band‐structure calculations. TaNi 2.05 Te 3 is a metallic conductor according to the results of four‐probe resistivity measurements.