Abstract
Six novel complexes formed under hydrothermal conditions by uranyl ions with three ligands comprising a rigid phenyl- or cyclohexyl-containing platform, and two to four acetate arms have been obtained. 1,3,5-Benzenetriacetic acid (H3BTA) yielded the complex [NMe4][UO2(BTA)]·H2O (1), in which the structure-directing counterion induces a two-dimensional, bilayer-type structure different from that previously reported, with both the tris-chelating ligand and the metal ion as trigonal nodes. Two complexes were obtained with 1,2-phenylenedioxydiacetic acid (H2PDDA), [UO2(PDDA)(H2O)] (2) and [H2DABCO][(UO2)2(PDDA)3]·1.5H2O (3). Complex 2 is a simple, ribbon-like, one-dimensional polymer, while 3 is a nanotubular assembly built around the hydrogen-bonded, structure-directing counterions. Three complexes were obtained with trans-1,2-diaminocyclohexane-N,N,N′,N′-tetraacetic acid (H4DCTA), a polyaminopolycarboxylic acid, with different bases, [UO2(H2DCTA)(H2O)2]·H2O (4), [UO2(H2DCTA)(H2O)]·1.5H2O (5), and [UO2Na(HDC...
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