Notizen: Darstellung und Kristallstruktur von Cs4Sn2Se6 / Preparation and Crystal Structure of Cs4Sn2Se6
William S. SheldrickHelga G. Braunbeck
Abstract
The selenostannate(IV) Cs 4 Sn 2 Se 6 has been prepared by methanolothermal reaction of Cs 2 CO 3 with SnSe 2 at 160°C and 13 bar. The [Sn 2 Se 6 ] 4— anions contain two edge-bridged SnSe 4 tetrahedra and display crystallographic C 2h symmetry. The bridging Sn—Se distances of 2.587(1) are markedly longer than the terminal Sn—Se distances of 2.447(1) and 2.452(2) Å.
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