A new manganese coordination polymer(CP)has been synthesized under hydrothermal conditions.It’s formula is{Mn2(Oaobtc)(bpe)(H_(2)O)_(4)]}n,where H4Oobtc represents oxide azobenzene 2,2',3,3'-tetracarboxyl aci...A new manganese coordination polymer(CP)has been synthesized under hydrothermal conditions.It’s formula is{Mn2(Oaobtc)(bpe)(H_(2)O)_(4)]}n,where H4Oobtc represents oxide azobenzene 2,2',3,3'-tetracarboxyl acid,and bpe is 1,2-bis(4-pyridine)ethylene.It was characterized by elemental analysis,infrared spectrum and X-ray single-crystal diffraction.The coordination polymer crystallizes in the monoclinic system,space group P2_(1)/c.The central ion was coordinated with H_(4)Oobtc ligands using bridging model,and carboxylic group connects two adjacent Mn(Ⅱ)ions into dimer units.The oxygen from carboxylates connect these dimer units into a one-dimensional(1D)chain,and N atoms from the bpe further expanded them into three-dimensional(3D)supramolecular edifice,eventually.Variable-temperature magnetic measurements of CP 1 indicate the presence of weak antiferromagnetic exchange between two nearest Mn(Ⅱ)ions with J=–0.367 cm^(-1).展开更多
基金supported by the National Foundation for Science of China (No. U1804131 and 21671114)Foundation for Science&Technology Innovation Talents in Henan province (No. 16410010012)
文摘A new manganese coordination polymer(CP)has been synthesized under hydrothermal conditions.It’s formula is{Mn2(Oaobtc)(bpe)(H_(2)O)_(4)]}n,where H4Oobtc represents oxide azobenzene 2,2',3,3'-tetracarboxyl acid,and bpe is 1,2-bis(4-pyridine)ethylene.It was characterized by elemental analysis,infrared spectrum and X-ray single-crystal diffraction.The coordination polymer crystallizes in the monoclinic system,space group P2_(1)/c.The central ion was coordinated with H_(4)Oobtc ligands using bridging model,and carboxylic group connects two adjacent Mn(Ⅱ)ions into dimer units.The oxygen from carboxylates connect these dimer units into a one-dimensional(1D)chain,and N atoms from the bpe further expanded them into three-dimensional(3D)supramolecular edifice,eventually.Variable-temperature magnetic measurements of CP 1 indicate the presence of weak antiferromagnetic exchange between two nearest Mn(Ⅱ)ions with J=–0.367 cm^(-1).
