| | 1 | Author
| KurtO. Klepp | Requires cookie* | | | Title
| Darstellung und Kristallstruktur von TI3AgTe2 Preparation and Crystal Structure of Tl3A gTe2  | | | | Abstract
| The new compound Tl3A gTe2 was prepared by the reaction of Tl5T e3, Ag and Te at 550 °C, followed by slow cooling of the melt. It forms black crystals of metallic lustre which decompose by the influence of humidity. Tl3A gTe2 is monoclinic, space group P2,/c, with a = 11.020(5), b = 7.427(2), c = 9.888(3) Ä , ß — 116.62(4)°, Z = 4. The crystal structure was determ ined from four-circle diffractom eter data and refined to a conventional R of 0.083 for 1015 observed reflec tions. Tl3AgTe2 crystallizes with a new structure type, characterized by infinite layers, 2[A gT e2], running along (100), which are separated from each oth er by thallium atom s. The layers are built up by pairs of edge sharing A gTe4-tetrahedra linked together by common Te atoms according to |[A g (T e)T e 3/3]. The crystal structure is based on an arrangem ent of distorted c.p. tellurium layers, stacked along [010] (stacking sequence h2). All octahedral voids are occupied by Tl-atoms, Ag-and Tl-atoms are regularly distributed over the tetrahedral sites. | | | |
Reference
| Z. Naturforsch. 41b, 941 (1986); eingegangen am 17. März 1986 | | | |
Published
| 1986 | | | |
Keywords
| Ternary Chalcogenides, Thallium Silver Telluride, Crystal Structure, Preparation | | | |
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| default:Reihe_B/41/ZNB-1986-41b-0941.pdf | | | | Identifier
| ZNB-1986-41b-0941 | | | | Volume
| 41 | |
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