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首页> 外文期刊>Acta crystallographica. Section C, Structural chemistry. >Coordination polymers of Cd II II and Pb II II derived from bipyridine–glycoluril: influence of metal‐ion size and counter‐ions
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Coordination polymers of Cd II II and Pb II II derived from bipyridine–glycoluril: influence of metal‐ion size and counter‐ions

机译:来自Biphyidine-Glycolulil的CD II II和Pb II II的配位聚合物:金属离子尺寸和反离子的影响

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摘要

Two new one‐dimensional (1D) coordination polymers (CPs), namely catena ‐poly[[[aquacadmium(II)]‐bis(μ‐4b,5,7,7a‐tetrahydro‐4b,7a‐epiminomethanoimino‐6 H ‐imidazo[4,5‐ f ][1,10]phenanthroline‐6,13‐dione)] bis(perchlorate) dihydrate], {[Cd(C 14 H 10 N 6 O 2 ) 2 (H 2 O)](ClO 4 ) 2 ·2H 2 O} n or {[Cd(BPG) 2 (H 2 O)](ClO 4 ) 2 ·2H 2 O} n , 1 , and catena ‐poly[[lead(II)‐bis(μ‐4b,5,7,7a‐tetrahydro‐4b,7a‐epiminomethanoimino‐6 H ‐imidazo[4,5‐ f ][1,10]phenanthroline‐6,13‐dione)] bis(perchlorate) dihydrate], {[Pb(C 14 H 10 N 6 O 2 ) 2 ](ClO 4 ) 2 ·2H 2 O} n or {[Pb(BPG) 2 ](ClO 4 ) 2 ·2H 2 O} n , 2 , have been synthesized using bipyridine–glycoluril (BPG; systematic name: 4b,5,7,7a‐tetrahydro‐4b,7a‐epiminomethanoimino‐6 H ‐imidazo[4,5‐ f ][1,10]phenanthroline‐6,13‐dione), a urea‐fused tecton, in a mixed‐solvent system. The Cd II ion in 1 is heptacoordinated and the Pb II ion in 2 is hexacoordinated, with the Cd II ion adopting a pentagonal bipyramidal geometry and the Pb II ion adopting a distorted octahedral geometry. Both CPs form infinite linear chain structures which are hydrogen bonded to each other leading to the formation of three‐dimensional supramolecular network structures. Topological analysis of CPs 1 and 2 reveals that the structures exhibit 1D chain‐like arrangements in an AB–AB sequence and shows platonic uniform 2‐connected uninodal topologies. Furthermore, a comparative analysis of a series of structures based on the BPG ligand indicates that the size of the metal ion and the types of counter‐ions used have a great influence on the resulting frameworks and properties.
机译:两种新的一维(1D)配位聚合物(CPS),即Catena -Poly [[Aquacadmium(II)] - BIS(μ-4B,5,7,7a-Tetrahydro-4b,7a-epiminomethanoImino-6 h - 咪唑[4,5-F] [1,10]菲甲酸盐-6,13-​​二酮)]双(高氯酸盐)二水合物],{[Cd(C 14 H 10 N 6 O 2)2(H 2 O)]( CLO 4)2·2H 2 O} N或{[CD(BPG)2(H 2 O)](CLO 4)2·2H 2 O} N,1和Catena -Poly [[铅(II)-BIS (μ-4b,5,7,7a-四氢-4b,7a-epiminomethanoimino-6h-inmidazo [4,5-f] [1,10]菲咯啉-6,13-​​二酮)]双(高氯酸盐)二水合物] ,{[Pb(C 14H 10 N 6 O 2)2](CLO 4)2·2H 2 O} N或{[PB(BPG)2](CLO 4)2·2H 2 O} N,2,已使用Biphyridine-Glycolulil合成(BPG;系统名称:4B,5,7,7a-Tetrahydro-4b,7a-epiminomethanoImino-6h-inmidazo [4,5-f] [1,10]菲啉-6,13 - 在混合溶剂系统中,尿素熔融构造型脲。 CDI II离子在1中略微展开,Pb II离子在2中是六己醛,CDI II离子采用五角形双滤网几何形状,PB II离子采用扭曲的八面体几何形状。两个CPS形成无限的线性链结构,其彼此键合,导致三维超分子网络结构的形成。 CPS 1和2的拓扑分析表明,结构在AB-AB序列中表现出1D链状布置,并显示粘土式均匀2-连接的单扬子拓扑。此外,基于BPG配体的一系列结构的比较分析表明金属离子的尺寸和所用的反抗体类型对所得框架和性质具有很大影响。

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