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Updated: Mar 7, 2026

Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride
Published on: July 8, 2021
Synthesis and structural study of new metallasilsesquioxanes of potassium and uranium
Stephan Gießmann1, Volker Lorenz1, Phil Liebing1
1Chemisches Institut der Otto-von-Guericke-Universität, 39106 Magdeburg, Germany. frank.edelmann@ovgu.de.
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.

