Ca4As3 – a new binary calcium arsenide

نویسندگان

  • Andrea V. Hoffmann
  • Viktor Hlukhyy
  • Thomas F. Fässler
چکیده

The crystal structure of the binary compound tetra-calcium triarsenide, Ca4As3, was investigated by single-crystal X-ray diffraction. Ca4As3 crystallizes in the Ba4P3 structure type and is thus a homologue of isotypic Sr4As3. The unit cell contains 32 Ca(2+) cations, 16 As(3-) isolated anions and four centrosymmetric [As2](4-) dumbbells. The As atoms in each of the dumbbells are connected by a single bond, thus this calcium arsenide is a Zintl phase.

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عنوان ژورنال:

دوره 71  شماره 

صفحات  -

تاریخ انتشار 2015