English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The orthotellurates (VI) of strontium and barium were synthesized at 1373 K in air by oxidation of TeO 2  in a melt of SrBr 2  and BaBr 2 , respectively. Their unprecedented structures were determined from room temperature single crystal X-ray diffraction data. Sr 3 TeO 6 , [ F -1,  Z  = 32,  a  = 16.5338(2) Å,  b  = 16.6308(2) Å,  c  = 16.7112(3) Å,  α  = 90.031(2)°,  β  = 90.035(2)°,  γ  = 90.1370(10)°,  R [ F  2  &gt; 2 σ ( F  2 )] = 0.035, 19195  F  2  data, 375 variable parameters] and Ba 3 TeO 6  [ I 4 1 / a ,  Z  = 80,  a  = 19.3878(10) Å,  c  = 34.909(2) Å,  R [ F  2  &gt; 2 σ ( F  2 )] = 0.034, 19576  F  2  data, 453 variable parameters] are eight- and 40-fold superstructures which can be described as a pseudo-cubic close-packing of [TeO 6 ] 6–  octahedra with  M  2+  ( M  = Ba, Sr) atoms located in the tetrahedral and octahedral voids. Sr 3 TeO 6  and Ba 3 TeO 6  are hettotypes of the cubic aristotype with the double perovskite structure crystallizing in space group  Fm -3 m . A comparative discussion of the crystal structures and their group-subgroup relations are given, including different approaches for the structure descriptions.

Sr 3 TeO 6 and Ba 3 TeO 6 : double perovskites with pronounced superstructures