Vanadium oxyhydroxide

Vanadium oxyhydroxides (p. 471) provide examples of such layers. In Chapter 3 we gave the (layer) structure of the compound CuHg(0H)2(N03)2(H20)2 as a more complex example of the plane 4-gon net. This is in fact the AX3 layer of Fig. 5.26(a), a point more easily appreciated if this layer is shown in projection (on the plane of the layer) as in (d). 

Fig. 99. The structures of vanadium oxyhydroxides. (a) duttonite VO(OH)2 (b) protodoloresite V303(0H)5 and (c) haggite V202(0H)3. Large spheres O, small spheres V. Hydrogen bonds are...

Blackmore D. P. T., Ellis J. and Riley P. J. (1996) Treatment of a vanadium-containing effluent by adsorption/ coprecipitation with iron oxyhydroxide. Water Res. 30, 2512-2516. 

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