Enantiospecific inclusion of chiral 1,2-dichloroethane rotamers in the crystal lattice of chiral square-pyramidal Cu(II) complexes with perfectly polar alignment of guest and host molecules

The inclusion compounds, [CuL^1 2(H2O)]·(P)-C2H4Cl2 and [CuL^2 2(H2O)]·(M)-C2H4Cl2(HL^1=N-(2-hydroxy-5-nitrobenzyl)-(R)(alpha)-methylbenzylamine and HL^2=N-(2-hydroxy-5-nitrobenzyl)-(S)-(alpha)-methylbenzylamine), crystallise in the noncentrosymmetric space group C2; intermolecular hydrogen bonding leads to a perfectly polar alignment of both host and guest molecules with enantioselectivity.