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Two new coordination polymers,{[Co(O2N-Hbtb)(phen)(H2O)3]·2H2O}n 1 and {[Cu3(O2N-btb)2(bipy)2(H2O)4]·4H2O}n 2(O2N-H3btb=5-nitro-1,2,3-benzenetricarboxylic acid,phen=1,10-phenanthroline,bipy=2,2’-bipyridine),were prepared through hydrothermal reactions of Co(Ⅱ) or Cu(Ⅱ) salt with O2N-H3btb in the presence of different auxiliary N-donor ligands.Their crystal structures were determined by single-crystal X-ray diffraction analysis and further characterized by elemental analysis and IR spectroscopy.In the two complexes,O2N-H3btb ligand acts as monodentate and bis-monodentate modes,respectively.Complex 1 displays a two-dimensional layered structure through the inter-and intramolecular hydrogen bonding interactions while complex 2 has an O2N-btb bridged one-dimensional chain which is extended into a three-dimensional network by hydrogen bonding interactions.The magnetic properties of complex 2 are investigated over the temperature range of 2～300 K and ferromagnetic interactions are observed.
Two new coordination polymers, {[Co (O2N-Hbtb) (phen) (H2O) 3] · 2H2O} n1 and {[Cu3 (O2N-btb) 2 (bipy) 2 (H2O) 4] (O2N-H3btb = 5-nitro-1,2,3-benzenetricarboxylic acid, phen = 1,10-phenanthroline, bipy = 2,2’-bipyridine), were prepared through hydrothermal reactions of Co (Ⅱ) or Cu ) salt with O2N-H3btb in the presence of different auxiliary N-donor ligands. Their crystal structures were determined by single-crystal X-ray diffraction analysis and further characterized by elemental analysis and IR spectroscopy.In the two complexes, O2N-H3btb ligand acts as monodentate and bis-monodentate modes, respectively.Complex 1 displays a two-dimensional layered structure through the inter-and intramolecular hydrogen bonding interactions while complex 2 has an O2N-btb bridged one-dimensional chain which is extended into a three-dimensional network by hydrogen bonding interactions. The magnetic properties of complex 2 are investigated over the temperature range of 2 ~ 300 K and ferromagnetic interactions are ob served.