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Pentagonal column structures

Figure 7 The generation of pentagonal columns in the WO3 structure. Blocks of four octahedra, circled in (a), are rotated hy 90° in (h) to produce four pentagonal tunnels. F ilhng of these tunnels hy O-M-O chains produces pentagonal columns, two of which are shaded in (c)... Figure 7 The generation of pentagonal columns in the WO3 structure. Blocks of four octahedra, circled in (a), are rotated hy 90° in (h) to produce four pentagonal tunnels. F ilhng of these tunnels hy O-M-O chains produces pentagonal columns, two of which are shaded in (c)...
WO2.72 is not included in the homologous series of CS structures, because besides edge- and comer-sharing octahedra also pentagonal columns exist (as described imder tungsten bronzes). [Pg.149]

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See also in sourсe #XX -- [ Pg.229 ]



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