利用环三磷腈衍生六羧酸配位体构建镧系配位聚合物

摘要

Solvothermal reactions of hexakis(4 -formylphenoxy)cyclotriphosphazene(H6L1)with La/Nd(NO3)3·6H2O in H2O/DMF under similar synthesis conditions produced two isostructural compounds,namely,{[La2(C42H24O18P3N3)(H2O)4] ·(H2O)3}n(1),and{[Nd2(C42H24O18P3N3)(H2O)3(C2H5OH)]·(H2O)3}n(2). Compound 1 and 2 has a 2D layer crystal structure with the 4-connected topological network incorporating the extended hexa-carboxylate ligand L1. In these two compounds,the ligand L1 is fully deprotonated,whose six extended carboxyl arms connect four metallic nodes to form the high dimensional frameworks. In addition,IR,TGA and XRD characterizations of two complexes were also carried out.%利用环三膦腈衍生六(4-甲酰基苯氧基)环三磷腈(H6L1)与La/Nd(NO3)3·6H2O在H2O/DMF溶剂体系,于相似合成条件下制备了两种异构配位聚合物,即{[La2(C42H24O18P3N3)(H2O)4]·(H2O)3}n(1),{[Nd2(C42H24O18P3N3)(H2O)3(C2H5OH)]· (H2O)3}n(2).化合物1和2具有2D层晶体结构,其中延伸的六羧酸配体连接稀土金属离子形成最终的拓扑网络结构.在这两种化合物中,配体L1完全去质子化,其六个延伸的羧基臂连接四个金属节点以形成高维度框架.此外,还进行了两种配合物进行了IR,TGA和XRD表征.