Synthesis and structure of Cs2Te13 and Cs4Te28, tellurium-rich tellurides on the methanolothermal route to Cs3Te22

Abstract
Reaction of Cs2CO3 and As2Te3 in superheated methanol at 160 and 180 °C afford Cs2Te13 and Cs4Te28, respectively, whose anionic structures contain Te13 2– chains (Cs2Te13), Te6 2– chains and Ten rings (n= 4,8)(Cs4Te28) as building units.

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