Synthesis and crystal structure of new Np(VI) and Pu(VI) phthalates, Na4{AnO2[(OOC)2C6H4]3} · n H2O |
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| Authors: | I. A. Charushnikova N. N. Krot I. N. Polyakova Z. A. Starikova |
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| Affiliation: | (1) Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Moscow, Russia;(2) Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow, Russia;(3) Nesmeyanov Institute of Organoelemental Compounds, Russian Academy of Sciences, Moscow, Russia |
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| Abstract: | Double phthalates of Np(VI) and Pu(VI) of the composition Na4[AnO2L3] · nH2O [L = (OOC)2C6H4] were synthesized in the crystalline form and studied by X-ray diffraction. The compounds are isostructural, their crystals consist of complex anions [AnO2L3]4− and Na+ cations, forming neutral layers; water molecules are located between the layers. The coordination polyhedra of An(VI) are hexagonal bipyramids, whose average planes are formed by oxygen atoms of three phthalate anions. In passing from Np(VI) to Pu(VI), the actinide contraction is reflected to a greater extent in the variation of the bond lengths with apical oxygen atoms of the bipyramids, whereas the An-O bond lengths in the equatorial plane of the bipyramids vary insignificantly. Original Russian Text ? I.A. Charushnikova, N.N. Krot, I.N. Polyakova, Z.A. Starikova, 2007, published in Radiokhimiya, 2007, Vol. 49, No. 2, pp. 106–110. |
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