Acta Cryst. (2005). E61, i113-i115  [ doi:10.1107/S1600536805016090 ]

Lutetium(III) oxotellurate(IV), Lu₂Te₄O₁₁

P. Höss, G. Starkulla and T. Schleid

Abstract: Rare-earth(III) oxotellurates(IV) with the composition M₂Te₄O₁₁ are known for yttrium and all lanthanides except promethium and lutetium from single-crystal X-ray structure determinations. Single crystals of the last missing non-radioactive isostructural compound, Lu₂Te₄O₁₁, can now be obtained by modifying the common method of synthesis from the binary oxides (Lu₂O₃ and TeO₂; 1:4 molar ratio) using torch-sealed non-evacuated silica ampoules as reaction containers. The structure contains layers of edge-sharing [LuO₈] polyhedra connected by oxotellurate(IV) chains. These consist of [TeO₃]^2- and [Te₂O₅]^2- anions (with ¹-tetrahedral oxygen coordination for all central Te⁴⁺ cations) linked by strong secondary Te-O interactions.

Online 28 May 2005

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