Malin Artem V, Ivlev Sergei I, Ostvald Roman V, Kraus Florian
National Research Tomsk Polytechnic University, 30 Lenina avenue, 634050 Tomsk, Russian Federation.
Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35032 Marburg, Germany.
IUCrdata. 2020 Jan 31;5(Pt 1):x200114. doi: 10.1107/S2414314620001145. eCollection 2020 Jan.
Caesium tetra-fluorido-bromate(III), CsBrF, was crystallized in form of small blocks by melting and recrystallization. The crystal structure of CsBrF was redetermined from single-crystal X-ray diffraction data. In comparison with a previous study based on powder X-ray diffraction data [Ivlev (2013 ▸). . , 2846-2850], bond lengths and angles were determined with higher precision, and all atoms were refined with anisotropic displacement parameters. It was confirmed that the structure of CsBrF contains two square-planar [BrF] anions each with point group symmetry , and a caesium cation (site symmetry 2) that is coordinated by twelve fluorine atoms, forming an anti-cubocta-hedron. CsBrF is isotypic with CsAuF.
四氟溴酸铯（III），CsBrF，通过熔融和重结晶以小块形式结晶。CsBrF的晶体结构通过单晶X射线衍射数据重新测定。与之前基于粉末X射线衍射数据的研究[伊夫列夫（2013▸）……，2846 - 2850]相比，键长和键角的测定精度更高，并且所有原子都用各向异性位移参数进行了精修。已证实CsBrF的结构包含两个具有点群对称性的平面正方形[BrF]阴离子，以及一个由十二个氟原子配位形成反立方八面体的铯阳离子（位点对称性2）。CsBrF与CsAuF同型。
