A series of coordination polymers based on a multidentate N-donor ligand and different polycarboxylate anions: syntheses, structures and photoluminescent properties

作者：Kan, Wei-Qiu; Yang, Jin^*; Liu, Ying-Ying; Ma, Jian-Fang

来源：CrystEngComm, 2012, 14(19): 6271-6281.

DOI：10.1039/c2ce25388g

• METAL-ORGANIC FRAMEWORKS
• AROMATIC POLYCARBOXYLATE
• BIS(IMIDAZOLE) LIGANDS
• TOPOLOGICAL STRUCTURES
• PHYSICAL-PROPERTIES
• CRYSTAL-STRUCTURES
• 2D
• COMPLEXES
• NETWORKS
• INFINITE

A series of coordination polymers, namely, [Cd(4,4'-tmbpt)(o-bdc)(H2O)]center dot 5.25H(2)O (1), [Cd(4,4'-tmbpt)(m-bdc)] (2), [Cd(4,4'-tmbpt)(5-OH-bdc)] (3), [Cd5Na2(4,4'-tmbpt)(2)(btc)(4)(H2O)(3.5)]center dot 6.5H(2)O (4), [Cd-3(4,4'-tmbpt)(btc)(2)(H2O)(2)]center dot H2O (5), [Zn(4,4'-tmbpt)(m-bdc)] (6), [Zn-3(4,4'-tmbpt)(2)(p-bdc)(3)]center dot 5.5H(2)O (7), and [Zn-3(4,4'-tmbpt)(btc)(2)(H2O)(2)]center dot H2O (8), where 4,4'-tmbpt = 1-((1H-1,2,4-triazol-1-yl) methyl)-3,5-bis(4-pyridyl)-1,2,4-triazole, o-H(2)bdc = 1,2-benzenedicarboxylic acid, m-H(2)bdc = 1,3-benzenedicarboxylic acid, 5-OH-H(2)bdc = 5-hydroxy-1,3-benzenedicarboxylic acid, H(3)btc = 1,2,3-benzenetricarboxylic acid and p-H(2)bdc = 1,4-benzenedicarboxylic acid, have been synthesized under hydrothermal conditions. Their structures have been determined by single-crystal X-ray diffraction analyses and further characterized by infrared spectra (IR), elemental analyses and powder X-ray diffraction (PXRD) analyses. Compounds 1, 3 and 7 display different 2D -> 3D interdigitated structures. Compound 2 shows a 3D 6-connected framework with (4(12).6(3)) topology. Compound 4 reveals a 3D (3,4,8)-connected net based on hexanuclear units. Compounds 5 and 8 are isostructural and display 3D (3,9)-connected frameworks based on trinuclear units. Compound 6 exhibits an unusual 2D -> 3D polythreaded framework. The structural discrepancies of compounds 1-8 indicate that the presence of the different organic anions play important roles in the formation of the final structures of the coordination polymers. The luminescent properties were also investigated for the compounds 1-8.

• 出版日期2012
• 单位东北师范大学