title: Spectroscopic evidence for the direct coordination of the pertechnetate anion to the uranyl cation in [UO2(TcO4)(DPPMO2)2]+.
abstract: We report the synthesis and structural characterization of [UO(2)(ReO(4))(DPPMO(2))(2)][ReO(4)] and [UO(2)(Cl)(DPPMO(2))(2)][Cl] (where DPPMO(2) = bis(diphenylphosphino)methane dioxide). In both complexes, the linear uranyl dication is coordinated to two bidentate DPPMO(2) 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 (31)P and (99)Tc NMR, we have shown that the cation, [UO(2)(TcO(4))(DPPMO(2))(2)](+), is stable in solution.
authors.affiliation: Centre for Radiochemistry Research, Department of Chemistry, The University of Manchester, Manchester M13 9PL, U.K.
authors.forename: Andrew D
authors.initials: AD
authors.lastname: Sutton
authors.forename: Gordon H
authors.initials: GH
authors.lastname: John
authors.forename: Mark J
authors.initials: MJ
authors.lastname: Sarsfield
authors.forename: Joanna C
authors.initials: JC
authors.lastname: Renshaw
authors.forename: Iain
authors.initials: I
authors.lastname: May
authors.forename: Leigh R
authors.initials: LR
authors.lastname: Martin
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Selvage
authors.forename: David
authors.initials: D
authors.lastname: Collison
authors.forename: Madeleine
authors.initials: M
authors.lastname: Helliwell
mesh_terms: D000838:Anions / Q000138:chemical synthesis / Q000737:chemistry; D002712:Chlorides / Q000737:chemistry; D018360:Crystallography, X-Ray; D008024:Ligands; D008956:Models, Chemical; D015609:Organotechnetium Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D012211:Rhenium / Q000737:chemistry; D013670:Sodium Pertechnetate Tc 99m / Q000031:analogs & derivatives / Q000138:chemical synthesis / Q000737:chemistry*; D017974:Uranium Compounds / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: D000838:Anions; D002712:Chlorides; D008024:Ligands; D015609:Organotechnetium Compounds; D017974:Uranium Compounds; D012211:Rhenium; D013670:Sodium Pertechnetate Tc 99m; C012597:uranium dioxide