Synthesis and characterization of complexes of uranium(VI) with acetone oxime and alpha-benzoin oxime

摘要

In this communication, we report the synthesis and characterization of two uranium(VI) complexes with acetone oxime (HL1) and alpha-benzoin oxime (H2L2). These complexes have been characterized on the basis of elemental analyses, infrared, UV-Visible absorption and H-1 NMR spectra. The reaction of acetone oxime, CH3(C=NOH)CH3, with U(VI) leads to the formation of a monomeric coordination complex of the formula UO2(H2O)(2)(L-1)(2) (1), whereas reaction of alpha-benzoin oxime, C6H5(C=NOH)(CHOH)C6H5, with U(VI) leads to the formation of a dimeric coordination complex of the formula [U2O4(OH)(2)(L-3)(HL4)].H2O (2) where L-3 = (C6H5)C(O-)=C(N=O)(C6H5) and HL4 = (C6H5)CH(O-)CH(NHOH)(C6H5) are two new deprotonated ligands derived from H2L2. [References: 13]