Enantiomers of M(en)2



In certain cases, achiral ligands can become chiral on coordination to a metal, leading to a complex that is chiral. Usually the achiral ligand contains a donor that rapidly inverts as a free ligand, but becomes locked in one configuration on coordination. An example is MeNHCH2CH2NHMe, where the two N atoms become chiral centres on coordination to a metal atom. For a square-planar complex, this imposed chirality results in four isomers: one pair of chiral enantiomers (A) and two complexes that are not chiral (B) and (C).






enantiomers of M(en)3