Crystal structure and magnetic properties of a new three-dimensional coordination polymer constructed from (4,4) layers based on dimeric iron (II) subunits

摘要

A new metal-organic polymer [Fe(pydc)(H_2O)] (1;H_2pydc=pyridine-2,5-dicarboxylic acid),has been hydrothermally synthesised and characterised by X-ray diffraction,showing that 1 is a three-dimensional framework featuring two-dimensional carboxylate-bridged layers based on canted dimeric iron (II) subunits.Magnetic measurements demosntrate that,although the carboxylate and pyridyl bridges are present in the layer 1,exhibits only a weak antiferromagnetism.