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Depending on the reaction conditions, the enantiopure macrocycle H3L containing three phenolic units is able to form mono‐ and trinuclear coordination compounds with rare earth metal ions. In these complexes this macrocycle can act as protonated H4L+, neutral H3L, monodeprotonated H2L–, bis‐deprotonated HL2– or tris‐deprotonated L3– ligand. X‐ray crystal structure of the Y(III) derivative of the protonated...