HfSb2-xTex: The Second New Compound on the Quasi-Binary Section HfSb2-HfTe2 with Different Sb-Sb Interactions

作者：Kleinke Katja M; Assoud Abdeljalil; Kleinke Holger^*

来源：Zeitschrift fur Anorganische und Allgemeine Chemie, 2011, 637(13): 2033-2038.

DOI：10.1002/zaac.201100275

• Polyantimonides
• Crystal structure
• Sb-Sb bonds
• Antimony
• Nonclassical interactions

Thus far, three different ribbons and layers of antimony atoms with various Sb-Sb bonds were found in Hf5Sb9, HfSb2 and HfSbTe. We uncovered a new variant when trying to dope Hf5Sb9 with tellurium atoms, namely HfSb2-xTex, with 0.4 <= x <= 0.7. HfSb2-xTex adopts the monoclinic OsGe2 type, space group C-2/m, a = 10.5216(8) angstrom, b = 3.7142(3) angstrom, c = 8.5924(7) angstrom, beta = 11.571(1), V = 292.05(4) angstrom(3) (Z = 4) when x = 0.5. This structure is composed of a layer of puckered six-membered rings of antimony atoms, with Sb-Sb distances of 2.82 and 3.12 angstrom. The different antimony atom substructures are compared in this article. Independent of the exact Sb/Te ratio, monoclinic HfSb(2-x)Tex is predicted to be metallic, as are Hf5Sb9, HfSb2 and orthorhombic HfSbTe.

• 出版日期2011-11