Hydrothermal Syntheses and Crystal Structures of Two Coordination Polymers with Terephthalic Acid and N-Donor Ligand: 2-Methyldipyrido[3,2-f:2',3'-h]quinoxaline

摘要

Two 3D coordination polymers, [Cd(BDC) (Medpq)·H_2O]_n 1, and [Co(BDC)(Medpq)·H_2O]_n 2 (BDC = terephthalic acid, Medpq = 2-Methyldipyrido[3,2-f:2', 3'-h]quinoxaline), have been synthesized by self-assembly. The structure analyses show that both of the two coordination polymers are formed by ID infinite chains through non-covalent interactions, and both of them are based on ID zigzag ones. The photoluminescent study of the coordination polymer [Cd(BDC)(Medpq)·H_2O]_n shows that it exhibit fluorescent emission bands at 567.7 nm.