Issue 42, 2015

Uranium(vi) complexes with isonicotinic acid: from monomer to 2D polymer with unique U–N bonding

Abstract

Two new uranium(VI) complexes with isonicotinic acid (HINT) have been synthesized and characterized. [(UO2)(NO3)2(HINT)2] (1) has a monomeric structure constructed of a hexagonal bipyramidal uranyl centre, two nitrate anions and two monodentate HINT in trans-positions. [(UO2)(OH)(INT)] (2) has a two-dimensional (2D) polymeric structure constructed of uranyl hydroxyl 1D pillars and μ3-bridging INT anions; the first observation of INT in μ3-bridging mode for U(VI) ion via U–N bonding. Thermal analysis confirmed both complexes lost coordinated INT ligands followed by further decomposition to form U3O8. Raman spectroscopy has confirmed the presence of uranyl ion and INT ligand in both complexes as well as the existence of nitrate vibrations in 1 and hydroxyl vibrations in 2. Their photoluminescence properties have been investigated.

Graphical abstract: Uranium(vi) complexes with isonicotinic acid: from monomer to 2D polymer with unique U–N bonding

Supplementary files

Article information

Article type
Paper
Submitted
22 Jan 2015
Accepted
02 Apr 2015
First published
02 Apr 2015

RSC Adv., 2015,5, 33249-33253

Uranium(VI) complexes with isonicotinic acid: from monomer to 2D polymer with unique U–N bonding

Y. Zhang, I. Karatchevtseva, J. R. Price, I. Aharonovich, F. Kadi, G. R. Lumpkin and F. Li, RSC Adv., 2015, 5, 33249 DOI: 10.1039/C5RA01272D

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