A pair of novel Cd(II) enantiomers based on lactate derivatives: Synthesis, crystal structures and properties

A pair of novel 3D homochiral metal−organic frameworks (HMOFs), namely [Cd2.5((R)-CIA)6(1,4-DIB)(H2O)2]·((CH3)2NH2)·H2O (1-D), [Cd2.5((S)-CIA)6(1,4-DIB)(H2O)2]·((CH3)2NH2)·H2O (1-L), have been synthesized using lactic acid derivative ligands ((R)-H3CIA and (S)-H3CIA) and 1,4-DIB. Crystallographic analyses indicate that the complexes 1-D and 1-L are packed by cage substructures. Some physical characteristics, such as solid-state circular dichroism (CD), thermal stabilities and photoluminescent properties are also investigated. Our results highlight the effective method to apply lactic acid derivative ligands to form interesting HMOFs. Using lactic acid derivative ligands ((R)-H3CIA and (S)-H3CIA) and 1,4-DIB to assemble with Cd2+ ions, a pair of novel 3D homochiral metal-organic frameworks (HMOFs) with cage substructures have been synthesized. [Display omitted] •Lactic acid derivative ligands•Cage substructure•Enantiomers