Syntheses, crystal structures and magnetic behaviors of three Mn-II-terephthalate coordination polymers containing terminal ligands

Three Mn-II-terephthalate coordination polymers, {Mn-II(tp)(bpy)(H2O)}, (1), {Mn-3(II)(tp)(6/2)(bpy)(2) center dot (dmf)}(n) (2) and {Mn-II(tp)(phen)}(n) (3) (tp = terephthalic dianion, bpy = 2,2'-bipyridine, phen = 1,10-phenanthroline) have been synthesized and characterized by single crystal X-ray diffraction studies and low temperature (2-300 K) magnetic measurements. The structure analysis of 1-3 show that they all are coordination polymers composed of Mn atoms as nodes and terephthalate dianions as spacers. Interestingly, compound 1 consists of 1D infinite zigzag chains, while compound 2 consists of 2D sheets and compound 3 has a 3D framework structure. The study of the temperature dependent magnetic susceptibilities revealed that all of the polymers show antiferromagnetism. (C) 2008 Elsevier Ltd. All rights reserved.Chemistry, Inorganic & NuclearCrystallographySCI(E)0ARTICLE112402-24082