article published yes Ralf Albrecht author Markus Hoelzel author Henrik Beccard author Michael Rüsing author 225010000-0003-4682-4577 Lukas Eng author Thomas Doert author Michael Ruck author Orange-colored crystals of the oxoferrate tellurate K12+6xFe6Te4−xO27 [x=0.222(4)] were synthesized in a potassium hydroxide hydroflux with a molar water–base ratio n(H2O)/n(KOH) of 1.5 starting from Fe(NO3)3 ⋅ 9H2O, TeO2 and H2O2 at about 200 °C. By using (NH4)2TeO4 instead of TeO2, a fine powder consisting of microcrystalline spheres of K12+6xFe6Te4−xO27 was obtained. K12+6xFe6Te4−xO27 crystallizes in the acentric cubic space group Iurn:x-wiley:09476539:media:chem202102464:chem202102464-math-0001 3d. [FeIIIO5] pyramids share their apical atoms in [Fe2O9] groups and two of their edges with [TeVIO6] octahedra to form an open framework that consists of two loosely connected, but not interpenetrating, chiral networks. The flexibility of the hinged oxometalate network manifests in a piezoelectric response similar to that of LiNbO3.The potassium cations are mobile in channels that run along the <111> directions and cross in cavities acting as nodes. The ion conductivity of cold-pressed pellets of ball-milled K12+6xFe6Te4−xO27 is 2.3×10^(−4) S ⋅ cm^(−1) at room temperature. Magnetization measurements and neutron diffraction indicate antiferromagnetic coupling in the [Fe2O9] groups. Wiley2021 eng General ChemistryCatalysisOrganic Chemistry 0947-6539 1521-376510.1002/chem.202102464 275714299-14306 yes R. Albrecht, M. Hoelzel, H. Beccard, M. Rüsing, L. Eng, T. Doert, M. Ruck, Chemistry – A European Journal 27 (2021) 14299–14306. Albrecht R, Hoelzel M, Beccard H, et al. Potassium Ion Conductivity in the Cubic Labyrinth of a Piezoelectric, Antiferromagnetic Oxoferrate(III) Tellurate(VI). <i>Chemistry – A European Journal</i>. 2021;27(57):14299-14306. doi:<a href="https://doi.org/10.1002/chem.202102464">10.1002/chem.202102464</a> Albrecht, Ralf, Markus Hoelzel, Henrik Beccard, Michael Rüsing, Lukas Eng, Thomas Doert, and Michael Ruck. “Potassium Ion Conductivity in the Cubic Labyrinth of a Piezoelectric, Antiferromagnetic Oxoferrate(III) Tellurate(VI).” <i>Chemistry – A European Journal</i> 27, no. 57 (2021): 14299–306. <a href="https://doi.org/10.1002/chem.202102464">https://doi.org/10.1002/chem.202102464</a>. @article{Albrecht_Hoelzel_Beccard_Rüsing_Eng_Doert_Ruck_2021, title={Potassium Ion Conductivity in the Cubic Labyrinth of a Piezoelectric, Antiferromagnetic Oxoferrate(III) Tellurate(VI)}, volume={27}, DOI={<a href="https://doi.org/10.1002/chem.202102464">10.1002/chem.202102464</a>}, number={57}, journal={Chemistry – A European Journal}, publisher={Wiley}, author={Albrecht, Ralf and Hoelzel, Markus and Beccard, Henrik and Rüsing, Michael and Eng, Lukas and Doert, Thomas and Ruck, Michael}, year={2021}, pages={14299–14306} } Albrecht, R., Hoelzel, M., Beccard, H., Rüsing, M., Eng, L., Doert, T., &#38; Ruck, M. (2021). Potassium Ion Conductivity in the Cubic Labyrinth of a Piezoelectric, Antiferromagnetic Oxoferrate(III) Tellurate(VI). <i>Chemistry – A European Journal</i>, <i>27</i>(57), 14299–14306. <a href="https://doi.org/10.1002/chem.202102464">https://doi.org/10.1002/chem.202102464</a> Albrecht, Ralf, et al. “Potassium Ion Conductivity in the Cubic Labyrinth of a Piezoelectric, Antiferromagnetic Oxoferrate(III) Tellurate(VI).” <i>Chemistry – A European Journal</i>, vol. 27, no. 57, Wiley, 2021, pp. 14299–306, doi:<a href="https://doi.org/10.1002/chem.202102464">10.1002/chem.202102464</a>. R. Albrecht <i>et al.</i>, “Potassium Ion Conductivity in the Cubic Labyrinth of a Piezoelectric, Antiferromagnetic Oxoferrate(III) Tellurate(VI),” <i>Chemistry – A European Journal</i>, vol. 27, no. 57, pp. 14299–14306, 2021, doi: <a href="https://doi.org/10.1002/chem.202102464">10.1002/chem.202102464</a>. 479772023-10-11T08:39:51Z2023-10-11T08:41:35Z