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Issue 8, 2017
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Synthesis and structural study of new metallasilsesquioxanes of potassium and uranium

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Abstract

The first metallasilsesquioxanes comprising potassium and uranium have been synthesized and structurally characterized by single-crystal X-ray diffraction. (Cy7Si7O12)2K6(DME)4 (2; Cy = cyclohexyl) is a centrosymmetric dimer, in which the two silsesquioxide ligands are interconnected by μ3- and μ4-bridging siloxide moieties. (Cy7Si7O12)2UVI (3) represents the first metallasilsesquioxane complex of an actinide element, featuring a U atom that is coordinated by two tridentate silsesquioxide ligands in a distorted octahedral fashion. The different structural effects of the large metal atomic radii are discussed.

Graphical abstract: Synthesis and structural study of new metallasilsesquioxanes of potassium and uranium

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Article information


Submitted
02 Jan 2017
Accepted
25 Jan 2017
First published
26 Jan 2017

Dalton Trans., 2017,46, 2415-2419
Article type
Communication

Synthesis and structural study of new metallasilsesquioxanes of potassium and uranium

S. Gießmann, V. Lorenz, P. Liebing, L. Hilfert, A. Fischer and F. T. Edelmann, Dalton Trans., 2017, 46, 2415
DOI: 10.1039/C7DT00006E

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