Abstract
A new arsenate K1+2xNi1−xFe2(AsO4)3(x= 1/8) {potassium nickel diiron(III) tris[arsenate(V)]} was synthesized using a flux method and its crystal structure was determined from single-crystal X-ray diffraction data. This material was also characterized by qualitative energy dispersive X-ray spectroscopy (EDS) analysis. The crystal structure belongs to the α-CrPO4-structure type, space groupImma. It consists of a three-dimensional-framework built up from FeO6and Ni0.875□1.25O6-octahedra and AsO4-tetrahedra that are sharing corners and/or edges, generating tunnels running along the [010] and [001] directions in which the potassium cations are located. The proposed structural model was validated by bond-valence-sum calculations, charge-distribution (CHARDI) and Madelung energy analyses.
Publisher
International Union of Crystallography (IUCr)
Subject
Condensed Matter Physics,General Materials Science,General Chemistry
Cited by
2 articles.
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