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Solid-state superstructure of 52+ displaying an ABC-type packing motif along one dimension. (a) Top-down view (tubular representation) of a single ABC stack showing the angles between the N–N vectors of adjacent 52+ dications and multiple [C–H···O] and hydrogen bonding interactions, indicated by dashed lines. (b) Tubular and space-filling representation of three repeating ABC stacks shown with the centroid-to-centroid distances between adjacent dications.
