Synthesis and characterization of [bis(beta-diketonato)uranium(VI)] nitrone compounds. The crystal and molecular structure of [UO2(TTA)(2)center dot p-NO2-C5H4NO]

摘要

N-oxide compounds of the type [UO2(OO)(2).L] (OO = TTA, DBM, BA or BTA; L = C6H5CH = N(O)C6H5 (L-1), C6H5CH = N(O)C6H4.CH3-P) (L-2) or p-NO2-C5H4NO) have been prepared and characterized by IR, H-1 and F-19 NMR spectroscopic and elemental analyses methods. Spectral studies show that the N-oxide ligands coordinate through its nitroxyl oxygen atom to the uranyl group. The single crystal X-ray structure of the compound [UO2(TTA)(2).p-NO2-C5H4NO] confirms the spectroscopic observations. (C) 2002 Elsevier Science Ltd. All rights reserved. [References: 26]