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.
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
关键词
吡啶-2
6-二羧酸
钕
配合物
晶体结构
磁性
pyridine-2, 6-dicarboxylate
neodymium polymer
single crystal structure
magnetic properties
