Two low-dimensional transition metal coordination polymers constructed from thiophene‑2,5‑dicarboxylic acid and N/O-donor ligands: Syntheses, structures and magnetic property

Abstract Two low-dimensional transition metal coordination polymers (CPs), namely, Co(TDC)(Hdmea) 2 ( 1 ), [Mn(TDC)(5,5′‑dmbpy)(H 2 O)] n ( 2 ) (H 2 TDC = thiophene‑2,5‑dicarboxylic acid, Hdmea =  N , N ‑dimethylethanolamine, 5,5′‑dmbpy = 5,5′‑dimethyl‑2,2′‑dipyridyl) have been synthesized and characterized. Compound 1 which is the first coordination compound containing the H 2 TDC and chelating Hdmea ligands so far features an isolated structure containing the centrosymmetric dinuclear [Co(TDC)(Hdmea) 2 ] 2 unit. Notably, the imidazole ligand as one of the reactants is not incorporated into the final structure of compound 1 , but it is important to obtain the single crystals suitable for single–crystal X-ray diffraction analysis. Compound 2 possesses a one-dimensional (1D) zigzag chain based on the [Mn(TDC)(5,5′‑dmbpy)(H 2 O)] building unit. In addition, the magnetic property of compound 2 is investigated.