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Crystal structure of a trigonal polymorph of aqua-dioxidobis(pentane-2,4-dionato-κ2 O,O')uranium(VI).

ABSTRACT: The title compound, [UO2(acac)2(H2O)] consists of a uran-yl(VI) unit ([O=U=O]2+) coordinated to two monoanionic acetyl-acetonate (acac, C5H7O2) ligands and one water mol-ecule. The asymmetric unit includes a one-half of a uranium atom, one oxido ion, one-half of a water mol-ecule and one acac ligand. The coordination about the uranium atom is distorted penta-gonal-bipyramidal. The acac ligands and Ow atom comprise the equatorial plane, while the uranyl O atoms occupy the axial positions. Inter-molecular hydrogen bonding between complexes results in the formation of two-dimensional hexa-gonal void channels along the c-axis direction with a diameter of 6.7 Å. The monoclinic (P21/c space group) polymorph was reported by Alcock & Flanders [(1987). Acta Cryst. C43, 1480-1483].

SUBMITTER: Hernandez A 

PROVIDER: S-EPMC8739209 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature

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Crystal structure of a trigonal polymorph of aqua-dioxidobis(pentane-2,4-dionato-κ<sup>2</sup> <i>O</i>,<i>O</i>')uranium(VI).

Hernandez Alejandro A   Chakraborty Indranil I   Ortega Gabriela G   Dares Christopher J CJ  

Acta crystallographica. Section E, Crystallographic communications 20220101 Pt 1

The title compound, [UO<sub>2</sub>(acac)<sub>2</sub>(H<sub>2</sub>O)] consists of a uran-yl(VI) unit ([O=U=O]<sup>2+</sup>) coordinated to two monoanionic acetyl-acetonate (acac, C<sub>5</sub>H<sub>7</sub>O<sub>2</sub>) ligands and one water mol-ecule. The asymmetric unit includes a one-half of a uranium atom, one oxido ion, one-half of a water mol-ecule and one acac ligand. The coordination about the uranium atom is distorted penta-gonal-bipyramidal. The acac ligands and O<sub>w</sub> atom com  ...[more]

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