---
res:
  bibo_abstract:
  - 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.@eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Ralf
      foaf_name: Albrecht, Ralf
      foaf_surname: Albrecht
  - foaf_Person:
      foaf_givenName: Markus
      foaf_name: Hoelzel, Markus
      foaf_surname: Hoelzel
  - foaf_Person:
      foaf_givenName: Henrik
      foaf_name: Beccard, Henrik
      foaf_surname: Beccard
  - foaf_Person:
      foaf_givenName: Michael
      foaf_name: Rüsing, Michael
      foaf_surname: Rüsing
      foaf_workInfoHomepage: http://www.librecat.org/personId=22501
    orcid: 0000-0003-4682-4577
  - foaf_Person:
      foaf_givenName: Lukas
      foaf_name: Eng, Lukas
      foaf_surname: Eng
  - foaf_Person:
      foaf_givenName: Thomas
      foaf_name: Doert, Thomas
      foaf_surname: Doert
  - foaf_Person:
      foaf_givenName: Michael
      foaf_name: Ruck, Michael
      foaf_surname: Ruck
  bibo_doi: 10.1002/chem.202102464
  bibo_issue: '57'
  bibo_volume: 27
  dct_date: 2021^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/0947-6539
  - http://id.crossref.org/issn/1521-3765
  dct_language: eng
  dct_publisher: Wiley@
  dct_subject:
  - General Chemistry
  - Catalysis
  - Organic Chemistry
  dct_title: Potassium Ion Conductivity in the Cubic Labyrinth of a Piezoelectric,
    Antiferromagnetic Oxoferrate(III) Tellurate(VI)@
...