Synthesis and Structure of New Glutarate-Containing U(VI), Np(V), and Pu(VI) Compounds

The structures of three new glutarate-containing compounds have been characterized. These compounds are (CN3H6)(2)[(UO2)(2)(C5H6O4)(3)] center dot 4H(2)O (I), (CN3H6)(4)[(NpO2)(2)(C5H6O4)(3)] center dot 12H(2)O (II), and [PuO2(C5H6O4)(H2O)] (III), where C5H6O are glutarate anions and CN3H are guanidium cations. It was established that the structures of crystals I and II contain [(AnO(2))(2)(C5H6O4)(3)](z-) layers (An = U(VI) or Np(V) and z = 2 or 4, respectively), which can be described by the A(2)Q crystallochemical formula, where A is UO or NpO and Q(02) are glutarate ions. The structure of crystal III contains two interpenetrating [PuO2(C5H6O4)(H2O)] frameworks and can be described by the AQ(21)M(1) crystallochemical formula, where A = PuO, Q(21) = C5H6O, and \M-1 = H2O. The influence of topological isomerism on the structures of the glutarate-containing complexes belonging to the A(2)Q(3)(02) and AQ(21)M(1) crystallochemical groups was discussed.