Dynamic supramolecular coordination compounds: Tetrahedral [(M)4∩{Mg4(L1)6}], [In4(L)4] and cyclic [In6Cl6(L3)6]

The unique VT-dependent 1H NMR spectroscopic behaviour of meso-[In4(L)4] 1 can be explained by an unprecedented dynamic mesomerization process of the identical twins (2Δ,2Λ)(2P,2 M)-1⇌(2Λ,2Δ)(2 M,2P)-1’ resulting in the enantiotopization of the diastereotopic groups. To the best of our knowledge, this is the first report on the interconversion of a tetrahedral complex with [M4(L)4] stoichiometry [(L)3−=face-centred helical ligand)].