Dichotomy of π-stacking-directing noncovalent forces in organic–inorganic planar assemblies: the case of halo-substituted benzoquinones π-stacked with a platinum(ii) square-plane

The same organic–inorganic π-stacked structures of tetrahalo-1,4-benzoquinones QX (X = F, Cl, Br, I) with different interplanar holding forces have been investigated.