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Figure 1
(a) Axial view, (b) plane view and (c) displacement ellipsoid plot, including the asymmetric unit, of the C2/c phase of volborthite. Octahedral and tetrahedral polyhedra coordinated to Cu and V atoms, respectively, are displayed. CuO6 octahedra form kagome layers separated by V2O7 pillars and solvent water molecules. The layer contains a distorted kagome lattice made up of CuII ions, represented by thick lines in (b). Displacement ellipsoids are drawn at the 50% probability level in (c). [Symmetry codes: (i) −x + ![]() ![]() ![]() ![]() ![]() ![]() |