Jump to main content
Jump to site search


Six Uranyl-OrganicFrameworks with Naphthalene-Dicarboxylic Acid and Bipyridyl-Based Spacers: Syntheses, Structures, and Properties

Abstract

A new series of uranium coordination polymers have been hydrothermally synthesized by using 1,4-naphthalene dicarboxylic acid (H2NDC), namely, (H3O)2[(UO2)2(NDC)3]•H2O (1), (H2-bpp)[(UO2)2(NDC)3]•EtOH•5H2O (2), (H2-bpe)2/2[(UO2)2(NDC)3]•EtOH (3), (H2-bpp)[(UO2)2(NDC)3]•5H2O (4), (H2-bpp)[(UO2)(HNDC)(NDC)]2•2H2O (5), and (H2-bpy)[(UO2)(NDC)2] (6) [bpp = 1,3-di(4-pyridyl) propane, bpe = 4,4’-vinylenedipyridine, bpy = 4,4’-bipyridine]. Single-crystal X-ray diffraction demonstrates complex 1 represents the uranyl-organic polycatenated frameworks derived from a simple two-dimensional honeycomb grid network structure via H2NDC linker. Complexes 2–4 contain the dinuclear motifs of the two UO7 pentagonal and one UO8 hexagonal bipyramids which are linked by NDC2– anions creating a (UO2)4(NDC)2 unit, and further extend to a 2D layer through NDC2– anions. Complex 5 displays a 1D zigzag double chains structure, in which the carboxylate groups of the NDC2– anions adopt a chelate mode and further extends to 2D framework via hydrogen bond. The 1D structure of complex 6 is similar to the zigzag chain of complex 5. In addition, the powder X-ray diffraction, elemental analysis, IR, thermal stability and luminescence properties of all complexes have also been investigated in this paper. The photocatalytic properties of the six complexes for degradation of tetracycline hydrochloride (TC) under UV irradiation have been examined. Moreover, density functional theory calculations (DFT) were carried out to explore the electronic structural and bonding properties of the uranyl complexes 1−6.

Back to tab navigation

Supplementary files

Publication details

The article was received on 28 Dec 2017, accepted on 13 Feb 2018 and first published on 13 Feb 2018


Article type: Paper
DOI: 10.1039/C7DT04909A
Citation: Dalton Trans., 2018, Accepted Manuscript
  •   Request permissions

    Six Uranyl-OrganicFrameworks with Naphthalene-Dicarboxylic Acid and Bipyridyl-Based Spacers: Syntheses, Structures, and Properties

    W. Xu, Y. Ren, M. Xie, L. Zhou and Y. Zheng, Dalton Trans., 2018, Accepted Manuscript , DOI: 10.1039/C7DT04909A

Search articles by author

Spotlight

Advertisements