This single-crystal study confirms the space-group symmetry reported previously [Frueh (1959). Z. Kristallogr. 112, 44-52], but proves that interatomic distances were miscalculated, leading to incorrect assignment of coordination number for one Ag atom and incorrect structure description. The structure can be regarded as a strongly distorted antifluorite structure with both independent Ag atoms approximately tetrahedrally coordinated by Te. The Ag-Te distances are in the range 2.8415 (7)-3.034 (1) angstrom. The shortest Ag-Ag distance is 2.841 (1) angstrom, shorter than in metallic silver (2.89 angstrom).
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Lee et al. (1993) studied this question.
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