Crystal structure of benzyltrimethylammonium µ2-peroxo-bis[trichlorodioxouranate(VI)], a binuclear uranium complex containing dioxygen in a µ2-peroxo-linkage
- 1 January 1977
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 7,p. 648-650
- https://doi.org/10.1039/dt9770000648
Abstract
The interaction in air of benzyltrimethylammonium chloride with uranyl sulphate in methanol solution, containing sulphuric acid, has provided a variety of products one of which we have now characterized as benzyltrimethyl-ammonium µ2-peroxo-bis[trichlorodioxouranate(VI)], containing one of the first examples of a complex containing a dioxygen molecule, bonding as a µ2-peroxo-linkage. The crystals are monoclinic, P21/c, with a= 8.869(5), b= 11.013(5), c= 25.60(1)Å and β= 103.7(1)°. The asymmetric unit contains [N(PhCH2)Me3]2[UO2Cl3(O2)½], Z= 4. An automatic Weissenberg diffractometer was used to measure 2 442 independent reflections using MO-Kα, radiation at room temperature. The structure was refined by full-matrix least squares to R= 0.114 and R′= 0.072. The anion consists of two distorted coplanar Cl3O2 pentagons. They surround the uranyl groups which lie perpendicular to the plane of the pentagons and which are linked by a bridging oxygen molecule in which both oxygen atoms are equidistant from both uranium atoms.Keywords
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