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Licensed Unlicensed Requires Authentication Published by De Gruyter (O) March 1, 2016

β-K2Se2 and K2Se4: missing links in the binary system K-Se

  • Günther Thiele , Lisa Vondung and Stefanie Dehnen EMAIL logo


Two missing compounds within the binary K-Se system have been synthesized and structurally characterized by means of single-crystal diffraction. β-K2Se2 comprises cell parameters that are in line with predictions made from the series α/β-A2Chx. K2Se4, in contrast, incorporates “Se52–” chains with 50% occupation of the terminal selenium atoms, and has been synthesized on a rather unconventional solvothermal pathway employing successively mercury and ethylene dithiol as solvents.

Corresponding author: Stefanie Dehnen, Fachbereich Chemie, Wissenschaftliches Zentrum für Materialwissenschaften, Philipps-Universität Marburg, Hans-Meerwein-Strasse, D-35043 Marburg, Germany, E-mail:


G.T. thanks the Friedrich-Ebert-Stiftung. L.V. thanks the Studienstiftung des deutschen Volkes. Financial support from DFG (SPP 1415) is gratefully acknowledged. We are obliged to R. Riedel and M. Marsch for their help with X-ray diffraction.


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Received: 2015-12-13
Accepted: 2016-1-11
Published Online: 2016-3-1
Published in Print: 2016-5-1

©2016 by De Gruyter

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