The racemic form of 5 ((RR)5 + (SS)5) gives dinuclear complexes of 2:2 stoichiometry both with Cull, acting as a bis-terdentate ligand, and with Cu-I, acting as a bis-bidentate ligand. Single crystal X-ray diffraction studies have shown that the Cu-II complex exists as double-strand homochiral helicate molecules: P,P-[Cu-2(II)((RR)5)(2)](4+) and M,M-[Cu-2(II)((SS)5)(2)](4+); in which the two trans-1,2-cyclohexanediamine subunits have the same chirality for of the two strands. Each Cu-II metal center is six-coordinated according to a cis-octahedral geometry and interacts with a NNO donor subunit of each strand. The Cu-I complex, when crystallized from THF in the presence of (rac)5, gives a double-strand homochiral helicate complex and in the solid state forms a racemic mixture of the homochiral metal complexes M,M-[Cu-2(II)((SS)5)(2)](2+) and P,P-[Cu-2(II)((RR)5)(2)](2+).When crystallizing from a MeCN solution, Cut and (rac)5 give rise to the heterochiral nonhelicate dimeric complex [Cu-2(I)((RR)5)((SS)5)](2+),