title: Directed synthesis of crystalline plutonium(III) and (IV) oxalates: accessing redox-controlled separations in acidic solutions.
abstract: Both binary and ternary solid complexes of Pu(III) and Pu(IV) oxalates have been previously reported in the literature. However, uncertainties regarding the coordination chemistry and the extent of hydration of some compounds remain mainly because of the absence of any crystallographic characterization. Single crystals of hydrated oxalates of Pu(III), Pu(2)(C(2)O(4))(3)(H(2)O)(6).3H(2)O (I) and Pu(IV), KPu(C(2)O(4))(2)(OH).2.5H(2)O (II), were synthesized under moderate hydrothermal conditions and characterized by single crystal X-ray diffraction studies. Compounds I and II are the first plutonium(III) or (IV) oxalate compounds to be structurally characterized via single crystal X-ray diffraction studies. Crystallographic data for I: monoclinic, space group P2(1)/c, a = 11.246(3) A, b = 9.610(3) A, c = 10.315(3) A, Z = 4 and II: monoclinic, space group C2/c, a = 23.234(14) A, b = 7.502(4) A, c = 13.029(7) A, Z = 8.
authors.affiliation: Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA. runde@lanl.gov
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Runde
authors.forename: Lia F
authors.initials: LF
authors.lastname: Brodnax
authors.forename: George
authors.initials: G
authors.lastname: Goff
authors.forename: Amanda C
authors.initials: AC
authors.lastname: Bean
authors.forename: Brian L
authors.initials: BL
authors.lastname: Scott