Deubner Holger Lars, Koester Marcel, von Haenisch Carsten, Kraus Florian
Anorganische Chemie, Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35032 Marburg, Germany.
Acta Crystallogr E Crystallogr Commun. 2020 Sep 4;76(Pt 10):1587-1590. doi: 10.1107/S205698902001169X. eCollection 2020 Oct 1.
Tri-ethyl-ammonium hexa-bromido-uranate(IV) di-chloro-methane monosolvate, [(CH)NH][UBr]·CHCl, was obtained in the form of dark-brown crystals from the reaction of uranium penta-bromide with NEt and ethyl-ene glycol in di-chloro-methane at low temperature. During the progress of the reaction, the reduction of uranium(V) to uranium(IV) was observed, whose associated oxidation product could not be identified. The uranium atom of the [UBr] anion is coordinated by six bromido ligands in the shape of an octa-hedron. Between cations, anion and solvent mol-ecules of crystallization, numerous C-H⋯Hal hydrogen-bond-like inter-actions are present, leading to a three-dimensional network structure.
六溴化铀（IV）三乙铵二氯甲烷单溶剂合物，[(C₂H₅)₃NH][UBr₆]·CH₂Cl₂，是通过五溴化铀与三乙胺（NEt₃）以及乙二醇在低温二氯甲烷中反应得到的深棕色晶体形式。在反应过程中，观察到铀（V）还原为铀（IV），但其相关的氧化产物无法确定。[UBr₆]阴离子中的铀原子由六个溴配体以八面体形状配位。在阳离子、阴离子和结晶溶剂分子之间，存在许多C-H⋯Hal类氢键相互作用，导致形成三维网络结构。
