Abstract
Structure of two new molybdate complexes of Np(V) with composition of Cs2[(NpO2)2(MoO4)2(H2O)]·H2O (I) and Cs3[(NpO2)(MoO4)2] (II) has been studied. In structure I, two independent dioxocations NpO2+ are bound into pairs by the cation-cation interaction, one independent dioxocation being a ligand, and the other, a coordinating center. Two independent tetradentate-bridging molybdate ions bind pairs of dioxocations into the anionic skeleton. The coordination polyhedron of both Np atoms is the pentagonal bipyramid. Structure II has a chain-like structure with two independent bidentate-bridging molybdate ions binding dioxocations NpO2+ into anionic chains and the Np(1) atom having a coordination environment in the form of a tetragonal bipyramid the equatorial plane of which is formed by the oxygen atoms of four MoO42– anions.
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Funding
The study was financed in part by the Ministry of Education and Science of the Russian Federation (topic no. AAAA-A18-118040590105-4) and by the Program 15 of the Presidium of the Russian Academy of Sciences “Scientific foundations of the development of new functional materials.”
The X-ray diffraction experiments were performed at the Center for collective use of physical research methods at the Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences.
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Translated from Radiokhimiya, No. 2, pp. 103–109, February, 2021 https://doi.org/10.31857/S0033831121020015
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Grigor’ev, M.S., Charushnikova, I.A. & Fedoseev, A.M. Molybdate Complexes of Np(V) with Outer-Sphere Cs+ Cations. Radiochemistry 63, 133–140 (2021). https://doi.org/10.1134/S1066362221020016
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DOI: https://doi.org/10.1134/S1066362221020016