两个含双磷酸酯配体的镧系配合物的合成和结构表征  

Syntheses and structural characterizations of two lanthanide complexes containing bisphosphate ligands

作　　者：胡聪 卢延磊 王志强 李樱雨 金琼花[1] HU Cong;LU Yanlei;WANG Zhiqiang;LI Yingyu;JIN Qionghua(Department of Chemistry,Capital Normal University,Beijing 100048,China)

机构地区：[1]首都师范大学化学系,北京100048

出　　处：《黑龙江大学自然科学学报》2021年第6期692-701,共10页Journal of Natural Science of Heilongjiang University

基　　金：Supported by the National Natural Science Foundation of China(21171119,11574408,81573822,21376008);the Beijing Natural Science Foundation(2172017,2172012);the Beijing Municipal Education Commission(KM201510028006);the Scientific Research Base Development Program of the Beijing Municipal Commission of Education。

摘　　要：在乙腈和乙醇的混合溶剂中合成了两个新的镧系(Ⅲ)配合物,[Nd_(2)L_(3)(NO_(3))_(6)]_(n)(1)和[CeL(Phen)(NO_(3))_(3)]_(n)(2)(L=1,2-亚乙基二磷酸四异丙酯,Phen=邻菲罗啉)。通过X-射线单晶衍射、元素分析、红外光谱、核磁共振磷谱和热重分析对两个配合物进行了表征。配合物1是由Nd(NO_(3))_(3)·6H_(2)O和L以2∶3的比例混合得到的配合物。由亚乙基二磷酸四异丙酯及硝酸根离子提供的O原子与Nd^(3+)离子配位形成9配位构型。配合物1通过桥联的双磷酸酯配体形成二维网状结构。与配合物1不同,配合物2由Ce(NO_(3))3·6H_(2)O、L和Phen以1∶1∶1的比例混合得到。配合物2通过L连接成为一维无限链,再借助大量弱作用力形成三维立体堆积结构。Two new lanthanide(III)complexes[Nd_(2)L_(3)(NO_(3))_(6)]_(n)(1)and [CeL(Phen)(NO_(3))_(3)]_(n)(2)(L=tetraisopropyl 1,2-ethylenediphosphonate,Phen=1,10-phenanthroline)were synthesized in a mixed solvent of CH 3 CN and CH_(3)CH_(2)OH,and characterized by single-crystal X-ray diffraction,elemental analysis,IR spectroscopy,^(31)P NMR spectroscopy and thermal analyses.Complex 1 was obtained by mixing Nd(NO_(3))_(3)·6H_(2)O and L in the ratio of 2∶3.The O atoms provided by tetraisopropyl 1,2-ethylenediphosphonate and nitrate ion coordinated with Nd 3+ion to form a nine coordination configuration.Complex 1 was formed into a two-dimensional network structure through bridged bisphosphonate ligands.Unlike Complex 1,complex 2 was obtained by mixing Ce(NO_(3))_(3)·6H_(2)O,L and Phen in the ratio of 1∶1∶1.Complex 2 was connected by L to form a one-dimensional infinite chain,and then formed a three-dimensional stacking structure with the help of a large number of weak forces.

关 键 词：镧系配合物 1 2-亚乙基二磷酸四异丙酯 邻菲罗啉 

分 类 号：O616[理学—无机化学]