ChemInform Abstract: New Layered Zirconium Tellurides: Zr_0.30ZrTe₂ (I), Zr_0.29Zr₂Te₂As (II), and NaZr₂Te₂As (III).

Abstract

structure structure (solids and liquids) D 2000 -011New Layered Zirconium Tellurides: Zr 0.30 ZrTe 2 (I), Zr 0.29 Zr 2 Te 2 As (II), and NaZr 2 Te 2 As (III).-The new layered title tellurides are synthesized and characterized by X-ray and electrical resistivity measurements. Zirconium telluride (I) crystallizes in the hexagonal space group P6 3 mc (Z = 2) and displays close structural similarities to Zr 2 Se 3 . The structure of the ternary telluride (II) is refined in the rhombohedral space group Rr3rm (Z = 3) and resembles that of Ta 2 Te 2 As. Both tellurides (I) and (II) exhibit structures wherein Zr atoms are included between layers by partially filling trigonal antiprismatic holes. The quarternary telluride (III) proves to be isostructural to telluride (II). It is suggested that the [Zr 2 Te 2 As] layered compounds may offer new opportunities as electron-donating hosts. -(WANG, C.; EYLEM, C.; HUGHBANKS, T.; Inorg. Chem. 37 (1998) 3, 390-397; Dep. Chem., Tex. A&M Univ., College Station, TX 77843, USA; EN)