Fig. 13. Enumeration of the eight V centres in the {V₈O₂₄} cores deriving from the [V₈As₁₆O₄₀] structure (top left), followed by the depiction of substitution patterns and the respective [V₁₀As₁₂O₄₀]⁴⁻ isomers positioned in the shaded box areas colour code: V = blue, O = red, and As = green spheres.