基于三羧酸构筑的两个金属-有机骨架(MOFs):合成,晶体结构和性质(英文)

Two Metal-Organic Frameworks Based on Tricarboxylic Acid:Syntheses, Structures and Fluorescent Properties

以1,3-二(4′-羧基苯氧基)苯甲酸(H3L)为配体与金属盐反应,在水热条件下成功合成了2个金属-有机骨架(MOFs),分别为[Cd2(CH3COO)(L)(H2O)2]n(1)和[Na(H2L)]n(2)。由于H3L配体配位模式的不同,配合物表现出不同的网络结构。单晶结构分析表明,配合物1属于三斜晶系,P1空间群,配合物2属于单斜晶系,C2/c空间群。配合物1中Cd2+离子的次级构筑单元经由L3-连接形成三维网络结构。配合物2是一个5-连接的拓扑网络结构,其拓扑符号为(46·64)。此外,还对配合物1的荧光性能进行了分析。

Two metal-organic frameworks（MOFs）, formulated as [Cd2（CH3COO）（L）（H2O）2]n（1） and [Na（H2L）]n（2）（H3L=1,3-bis（4′-carboxylphenoxy）benzoic acid） were successfully prepared by hydrothermal reaction of H3 L ligand with metal salts. Because of the various coordination modes of the H3 L ligand, these compounds display structural diversity. Compound 1 crystallizes in triclinic system with P1 space group and 2 in monoclinic system with C2/c space group. The single crystal structures show that 1 possesses a 3D structural framework, in which the secondary building units（SBUs） are bridged by the L3-ligands, 2 features a 3D 5-connected network with（46·64）topology. Moreover, the luminescent property of compound 1 has been investigated. CCDC： 1009539, 1; 1009540, 2.