MersV1, Ncbi, Checkpoint, bibRecord, 000911

Tetra-μ2-acetato-tetraaquadi-μ3-oxido-octaoxidotetrauranium(VI) methanol disolvate tetrahydrate

Identifieur interne : 000911 ( Ncbi/Checkpoint ); précédent : 000910; suivant : 000912

Tetra-μ2-acetato-tetraaquadi-μ3-oxido-octaoxidotetrauranium(VI) methanol disolvate tetrahydrate

Auteurs : Hisham Sleem [Canada] ; Paris Georghiou [Canada] ; Louise N. Dawe [Canada]

Source :

Acta Crystallographica Section E: Structure Reports Online [ 1600-5368 ] ; 2011.

RBID : PMC:3238765

Abstract

The centrosymmetric title tetramer, [U₄(C₂H₃O₂)₄O₁₀(H₂O)₄]·2CH₄O, has a near planar core [maximum deviation from the least squares plane of 0.294 (6) Å]. It consists of two hexagonal–bipyramidally coordinated U^VI atoms connected via μ₂-O (acetate) and μ₃-O (oxide) bridges in the equatorial plane to two pentagonal–bipyramidally coordinated U^VI atoms. The equatorial plane of each U^VI atom is completed by a bound water molecule, while the axial positions are occupied by uranyl (UO₂)²⁺ O atoms. Multiple O—H⋯O hydrogen bonds are present, including a lattice methanol molecule bound to one of the pentagonal bipyramidal uranyl O atoms, as well as two different C¹₁(6) chains orginating from a donor water molecule, via a uranyl oxygen acceptor and an acetate acceptor on different, adjacent tetramers. Finally, the unit cell contains four U^VI tetramers, all connected by hydrogen bonding, forming a supramolecular R⁴₄(24) ring.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3238765

DOI: 10.1107/S1600536811050549
PubMed: 22199642
PubMed Central: 3238765

Affiliations:

Canada

Links to Exploration step

PMC:3238765

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-acetato-tetraaquadi-μ<sub>3</sub>
-oxido-octaoxidotetrauranium(VI) methanol disolvate tetrahydrate</title>
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<author><name sortKey="Georghiou, Paris" sort="Georghiou, Paris" uniqKey="Georghiou P" first="Paris" last="Georghiou">Paris Georghiou</name>
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-acetato-tetraaquadi-μ<sub>3</sub>
-oxido-octaoxidotetrauranium(VI) methanol disolvate tetrahydrate</title>
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<author><name sortKey="Dawe, Louise N" sort="Dawe, Louise N" uniqKey="Dawe L" first="Louise N." last="Dawe">Louise N. Dawe</name>
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<front><div type="abstract" xml:lang="en"><p>The centrosymmetric title tetramer, [U<sub>4</sub>
(C<sub>2</sub>
H<sub>3</sub>
O<sub>2</sub>
)<sub>4</sub>
O<sub>10</sub>
(H<sub>2</sub>
O)<sub>4</sub>
]·2CH<sub>4</sub>
O, has a near planar core [maximum deviation from the least squares plane of 0.294 (6) Å]. It consists of two hexagonal–bipyramidally coordinated U<sup>VI</sup>
 atoms connected <italic>via</italic>
 μ<sub>2</sub>
-O (acetate) and μ<sub>3</sub>
-O (oxide) bridges in the equatorial plane to two pentagonal–bipyramidally coordinated U<sup>VI</sup>
 atoms. The equatorial plane of each U<sup>VI</sup>
 atom is completed by a bound water molecule, while the axial positions are occupied by uranyl (UO<sub>2</sub>
)<sup>2+</sup>
 O atoms. Multiple O—H⋯O hydrogen bonds are present, including a lattice methanol molecule bound to one of the pentagonal bipyramidal uranyl O atoms, as well as two different <italic>C</italic>
<sup>1</sup>
<sub>1</sub>
(6) chains orginating from a donor water molecule, <italic>via</italic>
 a uranyl oxygen acceptor and an acetate acceptor on different, adjacent tetramers. Finally, the unit cell contains four U<sup>VI</sup>
 tetramers, all connected by hydrogen bonding, forming a supramolecular <italic>R</italic>
<sup>4</sup>
<sub>4</sub>
(24) ring.</p>
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Serveur d'exploration MERS

Tetra-μ2-acetato-tetraaquadi-μ3-oxido-octaoxidotetrauranium(VI) methanol disolvate tetrahydrate

Tetra-μ2-acetato-tetraaquadi-μ3-oxido-octaoxidotetrauranium(VI) methanol disolvate tetrahydrate

Source :

Abstract

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