Spectroscopic evidence for the direct coordination of the pertechnetate anion to the uranyl cation in [UO2(TcO4)(DPPMO 2)2]+

Sutton, Andrew D. and John, Gordon H. and Sarsfield, Mark J. and Renshaw, Joanna C. and May, Iain and Martin, Leigh R. and Selvage, Andrew J. and Collison, David and Helliwell, Madeleine (2004) Spectroscopic evidence for the direct coordination of the pertechnetate anion to the uranyl cation in [UO2(TcO4)(DPPMO 2)2]+. Inorganic Chemistry, 43 (18). pp. 5480-5482. ISSN 0020-1669

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Abstract

We report the synthesis and structural characterization of [UO 2-(ReO4)(DPPMO2)2][ReO4] and [UO2(CI)(DPPMO2)2][CI] (where DPPMO 2 = bis(diphenylphosphino)methane dioxide). In both complexes, the linear uranyl dication is coordinated to two bidentate DPPMO2 ligands in the equatorial plane with one coordinated and one non-coordinated anion (either perrhenate or chloride). We have also prepared the pertechnetate analogue, and, through 31P and 99Tc NMR, we have shown that the cation, [UO2(TcO4)(DPPMO2) 2]+, is stable in solution.