配合物{[Nd_2(pydc)_2(μ_2-C_2O_4)(H_2O)_6]·2H_2O}_n的水热合成、晶体结构及性质  

Hydrothermal Synthesis,Crystal Structure and Characterization of a Neodymium(Ⅲ) Coordination Polymer {[Nd_2(pydc)_2(μ_2-C_2O_4)(H_2O)_6]·2H_2O}_n

作　　者：孙倩倩[1] 李铁夫[1] 雷朋朋[1] 冯勋[1] 

机构地区：[1]洛阳师范学院化学化工学院,河南洛阳471022

出　　处：《洛阳师范学院学报》2011年第8期54-57,共4页Journal of Luoyang Normal University

摘　　要：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.By using hydrothermal method, a new compound formulated as {[Nd2（pydc）2（μ2-C2O4）（H2O）6]·2H2O}n is synthesized. This compound is characterized by elemental analysis, IR spectroscopy and X- ray single crystal diffraction. The complex presents 1 D stair-like chain array bridged through the oxalate, and these 1 D chains are further linked into 3-D supramolecular frameworks by extensive intra- and intermolecular hydrogen-bonding interactions. Preliminary magnetic studies reveal the presence of weak antiferromagnetic couplings with the two adjacent magnetic centers bridged through the pyridine dicarboxylate oxygen atom the complex.

关 键 词：吡啶-2 6-二羧酸 钕 配合物 晶体结构 磁性 

分 类 号：O641[理学—物理化学]