Home Neue Chalkogenometallate mit binuklearen Anionen, I: Darstellung und Kristallstruktur von Rb6Sn2S7 / New Chalcogenometallates with Binuclear Anions, I: Preparation and Crystal Structure of Rb6Sn2S7
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Neue Chalkogenometallate mit binuklearen Anionen, I: Darstellung und Kristallstruktur von Rb6Sn2S7 / New Chalcogenometallates with Binuclear Anions, I: Preparation and Crystal Structure of Rb6Sn2S7

  • Kurt O. Klepp EMAIL logo and Ferdinand Fabian
Published/Copyright: June 2, 2014
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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, s.g. P212121 (No. 19) with a = 9.982(4), b = 13.45(1), c = 15.20(1) Å; 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 2.384 Å, 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.

Received: 1999-9-13
Published Online: 2014-6-2
Published in Print: 1999-12-1

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