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

In the title compound, tris­odium dicobalt arsenate diarsenate, Na 3 Co 2 AsO 4 As 2 O 7 , the two Co atoms, one of the two As and three of the seven O atoms lie on special positions, with site symmetries 2 and  m  for the Co,  m  for the As, and 2 and twice  m  for the O atoms. The two Na atoms are disordered over two general and special positions [occupancies 0.72 (3):0.28 (3) and 0.940 (6):0.060 (6), respectively]. The main structural feature is the association of the CoO 6  octa­hedra in the  ab  plane, forming Co 4 O 20  units, which are corner- and edge-connected  via  AsO 4  and As 2 O 7  arsenate groups, giving rise to a complex polyhedral connectivity with small tunnels, such as those running along the  b - and  c -axis directions, in which the Na +  ions reside. The structural model is validated by both bond-valence-sum and charge-distribution methods, and the distortion of the coordination polyhedra is analyzed by means of the effective coordination number.

Na3Co2(AsO4)(As2O7): a new sodium cobalt arsenate

Na₃Co₂(AsO₄)(As₂O₇): a new sodium cobalt arsenate