Actinide complexes arsines

Table 41 Complexes of Actinide(rV) Compounds with Arsine Oxides...

Arsines. The ligand o-phenylenebis(dimethylarsine) (diars) has been used to complex actinide halides. The complexes PaCl4(diars) and UCl4(diars) have been reported. Both are produced by the reduction of pentavalent precursors in solution upon addition of the arsine. ... 

Amine N-oxides, phosphine oxides, arsine oxides, and related ligands. The prototypical system for extraction of the uranyl ion from aqueous solution into organic solvent is tributylphosphate in hydrocarbons such as kerosene. This has stimulated interest in understanding the coordination chemistry of actinyl ions with P=0 (and related) functional groups in order to optimize extraction efficiency or discrimination among actinides to be separated. Of all classes of neutral group 16-atom donor ligands, phosphine oxide adducts are the most common examples of complexes of transuranic elements (Np, Pu). 

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