Synthesis of Chiral Coordination Polymers by Spontaneous Resolution

Three complexes have been synthesized from the reactions of 3,3-tetramethyleneglutaric acid (H2TMG), Cd(NO3)2, and secondary ligands:  [Cd(TMG)]n (1), {[Cd(TMG)(1,10-phen)·H2O]·2H2O}n (2), and [Cd(TMG)(4,4‘-bipy)]n (3) (phen = 1,10-phenanthroline, 4,4‘-bipy = 4,4‘-bipyridine). By adopting potential chiral ligands, metal−organic helical chains as a transmitter for chiral information, and coordination bonds as chiral discriminative interactions, the chiral coordination polymer 3 with an interesting three-dimensional architecture has been synthesized successfully by spontaneous resolution.