Abstract
Single crystals of α-ThBr4, thorium(IV) tetrabromide, were obtained as a side product from the reaction of CuBr with β-ThBr4 at 753 K. In the crystal structure, the Th atom (site symmetry \overline{4}..) is surrounded by eight Br atoms in the form of a tetragonal-disphenoidal coordination polyhedron. The connectivity of these polyhedra is 3
∞[ThBr4/2Br4/2]. In comparison with the previous crystal structure refinement [Mason et al. (1974). J. Less-Common Met.
35, 331–338], the current rerefinement resulted in much higher preciscion of the lattice parameters and the atomic coordinates.
Funder
Deutsche Forschungsgemeinschaft
Publisher
International Union of Crystallography (IUCr)
Subject
Organic Chemistry,Inorganic Chemistry,Analytical Chemistry
Reference9 articles.
1. Brandenburg, K. (2022). DIAMOND. Crystal Impact GbR, Bonn, Germany.
2. Structural parameters and unit cell dimensions for the tetragonal actinide tetrachlorides(Th, Pa, U, and Np) and tetrabromides (Th and Pa)
3. Bruker (2019). APEX3 and SAINT. Bruker AXS INC., Madison, Wisconsin, USA.
4. A Simple Access to Pure Thorium(IV) Halides (ThCl4, ThBr4, and ThI4)
5. Comparison of silver and molybdenum microfocus X-ray sources for single-crystal structure determination