Characterization of a Mixed Salt of 1-Hydroxypyridin-2-one Pu(IV) Complexes

A single-crystal X-ray diffraction analysis of the mixed salt of hydroxypyridonate Pu(IV) complexes is presented; [Pu(1,2-HOPO) 3 (H 2 O) 2 ·ClO 4 ] [Pu(1,2-HOPO) 4 ] crystallizes in P 2 1 with the asymmetric unit containing two distinct eight-coordinate Pu(IV) complexes, one tris(bidentate) and the other tetrakis(bidentate). The structure of this complex is compared to the analogous Ce(IV)- and Th(IV)-1,2-HOPO structures.