Structures of phospho­nitrides in light of the extended Zintl–Klemm concept

Vegas, A.; Osman, H.H.; Muñoz, A.; Blatov, V.A.; Manjón, F.J.

doi:10.1107/S2052520625004263

Acta Crystallographica Section B
Acta Crystallographica
Section B STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS

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Figure 7
(a) Structure of the Zintl phase SrAl₂ (sra type). Al atoms, converted into Ψ-Si, form a four-connected skeleton, in accordance with the 8-N rule. (b) One of the accordion-like moieties that are condensed in the structure of the Zintl polyanion Ψ-Si₂. The same skeleton is formed by the [AlSi]⁻ ≡ Ψ-[Si₂] subarray in isostructural RbAlSiO₄.

STRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS

ISSN: 2052-5206

Volume 81| Part 4| August 2025| Pages 378-394

https://doi.org/10.1107/S2052520625004263

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