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通过水热法合成一个新的配合物{[Nd2(pydc)2(μ2-C2O4).6H2O].2H2O}n(其中H2pydc=吡啶-2,6-二羧酸).分别用元素分析、红外光谱、X-射线单晶衍射等手段对标题配合物进行了结构表征.结构分析表明,吡啶-2,6-二羧酸把相邻两个Nd(I)离子连成双核单元,双核单元再经草酸根离子连接,形成一维阶梯型链状结构,这些一维链通过分子间氢键和p-p堆积作用得到三维超分子框架结构.磁学研究表明,相邻的两个顺磁中心Nd离子之间存在着弱的反铁磁相互作用.
A new complex {[Nd2 (pydc) 2 (μ2-C2O4) .6H2O] .2H2O} n (H2pydc = pyridine-2,6-dicarboxylic acid) was synthesized by hydrothermal method. The structure of the title complex was characterized by X-ray diffraction, X-ray single crystal diffraction and other means. Structural analysis showed that pyridine-2,6-dicarboxylic acid links two adjacent Nd (I) ions into dinuclear unit, The oxalate ions are connected to form a one-dimensional ladder-type chain structure, and these one-dimensional chains are three-dimensional supramolecular framework structures obtained through the intermolecular hydrogen bonding and pp stacking. The magnetic study shows that the adjacent two paramagnetic center Nd ions There is a weak anti-ferromagnetic interaction.