Four novel isostructural coordination polymers {[M(H′L)2(H2O)2]·2DMF} [M =Zn(II), Cd(II), Mn(II) and Co(II)] built using a nitrogen and oxygen donor azo ligand: Crystal structures and fluorescence studies

Four isostructural 1D coordination polymers with transition metal ions have been synthesized at room temperature. The supramolecular structures of 1-4 involve intricate weak C-H⋯π interactions that are further reinforced by strong non-covalent H-bonding interactions involving solvent molecules to form an overall 3D structure.