Abstract
Colorless crystals of the new thiostannate Rb6Sn2S7 were obtained by reacting a stoichiometric melt of Rb2S, Sn and S at 700?C. The compound is orthorhombic, oP60, sg. P212121 (No.19) with a=9.982(4)Ä, b=13.45(1)Ä, c=15.20(1)Ä; Z=4. The crystal structure was determined from diffractometer data and refined to a conventional R of 0.043 (1380 Fo's, 137 variables). The crystal structure contains dimeric anions, [Sn2S7](2-), which are built up by slightly distorted SnS4-tetrahedra sharing a common sulfur atom. The mean Sn-S bond length calculates as 2.384Ä, the bond angle on the bridging S is 110.4?. The structure contains six independent Rb-cations which are coordinated to 5-6 sulfur atoms in irregular configurations.
| Translated title of the contribution | New Chalcogenometallates with binuclear anions I: Preparation and crystal structure of Rb6Sn2S7 |
|---|---|
| Original language | German (Austria) |
| Number of pages | 5 |
| Journal | Zeitschrift für Naturforschung B: A Journal of Chemical Sciences |
| DOIs | |
| Publication status | Published - Sept 1999 |
Fields of science
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