Abstract: With the help of auxiliary N-donor ligand 3-(2-methyl-1H-imidazol-1-yl)-5-(5-methyl-1H-imidazo-1-yl)pyridine (MIMIP)，  a pair of novel homochiral coordination polymers (HCPs) [Cd((R)-CBA)(MIMIP)]·H₂O (1-R) and [Cd((S)-CBA)(MIMIP)\]·H₂O (1-S) were  synthesized by solvothermal reaction of  lactic derivatives (R)-4-(1-carboxyethoxy) benzoic acid ((R)-H₂CBA) and (S)-4-(1-carboxyethoxy)benzoic acid ((S)-H₂CBA)  with Cd(Ⅱ) ions, and the powder X-ray diffraction (PXRD), thermostability, UV-Vis absorption spectra and photoluminescent properties of two complexes were tested.   The results show that both 1-R and 1-S crystallized in the monoclinic  P2₁2₁2₁ space group and have 3D supramolecular framework enantiomers. In complex  1-R，  (R)-CBA^2- and MIMIP are linked by Cd(Ⅱ) ions to form two kinds of right-handed helical chains along b-axis，  respectively，   the enantiomeric left-handed helical chains exists in complex  1-S.   (R)/(S)\|CBA^2- and   MIMIP are linked by  Cd(Ⅱ) ions  to form the third helix in complexes 1-R and 1-S along b-axis.

Key words: chiral coordination polymers; , enantiomer; , helical chain; , supramolecular framework, lactic derivative