An elastic single crystal composed of one-dimensional chiral coordination polymers.

A single crystal composed of one-dimensional coordinated polymers, [CdCl ₂ (1-methyl-2-pyridone)] _n , has been synthesized and characterized. This compound exhibits outstanding elastic bending due to the molecular spring nature of the CdCl ₂ coordination framework and weak intermolecular interactions between the coordination chains. Owing to the helical arrangement of organic ligands surrounding the coordination structure, the compound crystallizes in a chiral space group. As a result, it displays compelling circular dichroism spectra and second harmonic generation properties.