2D Coordination Polymers Based on Isoquinoline-5-Carboxylate and Cu(II)

By combining isoquinoline-5-carboxilic acid with Cu(II) ions under several different conditions, we were able to obtain novel metallorganic materials, among which two 2D coordination polymers, CP 1 and CP 2 which were also characterized by SC-XRD. Ratio of solvents (EtOH : DMF) in the mixture employed during their synthesis has a marked effect in selecting the formation of one species or the other, which basically differ in the coordination at the Cu(II) center due to k1/k2 denticity of the carboxylate ligands. Two 2D coordination polymers which exclusively form depending on DMF : EtOH solvent mixture, fully characterized by SC-XRD, are among the novel materials formed by the combination of Cu(II) with isoquinoline-5-carboxylate ligand described here.image