Journal
ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS
Volume 71, Issue -, Pages 1548-+Publisher
INT UNION CRYSTALLOGRAPHY
DOI: 10.1107/S2056989015022367
Keywords
crystal structure; arsenide; Zintl phase
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Funding
- Deutsche Forschungsgemeinschaft [SPP 1458]
- Technische Universitat Munchen
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The crystal structure of the binary compound tetracalcium 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 Ca2+ cations, 16 Asa(3-) isolated anions and four centrosymmetric [As-2](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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