Three-Dimensional Hybrid Framework Containing U2O13 Dimers Connected via Cation-Cation Interactions

A three-dimensional metal organic frame-work with cation cation interactions, UO2(NO(2)TA)(2)(H2O) (1), was synthesized hydrothermally and characterized via single-crystal X-ray diffraction, powder X-ray diffraction, UV vis spectroscopy, and fluorescence spectroscopy (NO2TA = 2-nitroterephthalic acid). 1 crystallizes in the monoclinic space group P2(1)/n [a = 11.6970(7) angstrom, b = 15.1449(9) angstrom, c = 12.2564(8) angstrom, and beta = 109.193(1)degrees] and contains U2O13 dimers. The UV vis spectrum of 1 contains peaks attributable to both the ligand and the uranium cation. Furthermore, the ligand and the uranium cation of 1 can be independently excited, giving rise to two different luminescent spectra.