Abstract
K3Sb4BO13, Mr = 823.11 g.mol−1, crystallizes in the triclinic system, space group P $$\overline 1$$ , Z = 2. The lattice parameters are a = 7.133(1) A, b = 7.232(1) A, c = 13.259(2) A, α = 82.00 (1)°, β = 99.77(1)° and γ = 117.08(1)°, V = 598.7(2) A3, Dx = 4.566 Mg m−3. The final R index and weighted Rw index are 0.0251 and 0.0623, respectively. The three-dimensional network of the title compound is constituted by layers (Sb3O9)n, similar to that of hexagonal bronze of Magneli. These layers are linked together, in the c direction, alternatively by edge-sharing pairs of SbO6 octahedra and BO3 triangles. This framework has interconnected tunnels, running approximately along the a and b directions, in which the K+ ions are located.
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