[en] This work is a study of the reactions within liquid bromine trifluoride, between an alkaline fluoride and uranium tetrafluoride. It uses conductimetric and cryoscopic measurements. Our work is in five parts: 1. General information: methods of analysis and preparation of BrF₃; 2. Conductimetric measurements in BrF₃; 3. Cryoscopic study in BrF₃; 4. Solid-state study of the precipitates obtained by the mutual reaction of M[BrF₄] and UF₄; 5. Summary and conclusions. (author)

[en] This note addresses the preparation of bromine fluoride. It indicates the implemented process for the reaction, used products (fluorine and bromine), and column characteristics. It describes the operating mode. Apparatus drawing is provided

[en] Chlorine trifluoride (ClF₃) is recommended as a comparable alternative to bromine pentafluoride (BrF₅) for the quantitative extraction of oxygen from silicate minerals. (author)

[en] The method of differential thermal analysis has been used to investigate solid-liquid equilibria in the systems ClF₅-BF₃ and BrF₅-BF₃ in the whole range of concent-- rations of components. No formation of chemical compounds is found. BrF₅-BF₃ system refers to the series of simple systems of the eutectic type and is characterized by eutectics depleted in bromine pentafluoride content (less than 5 mol. %) with the melting temperature close to melting temperature of pure boron trifluoride. In the ClF₅-BF₃ system components are mutually insoluble in both liquid and solid states

[en] The infrared intensities (and wavenumbers) for the fundamental vibrations of ClF₅, BrF₅, and IF₅ have been predicted, using an atomic polar tensor for the F atom transferred from the CH₃F molecule, together with matrices obtained from the normal coordinate analysis of each molecule. The procedure used in these predictions has been described previously in detail for the prediction of infrared intensities of SF₆ and UF₆. Comparison of the calculated intensities with the experimental spectra of XF₅ molecules reveals that the predicted values are in fairly good agreement with the experimental values. The model and procedure allow prediction of intensities of binary combination and overtone bands as well as fundamental vibrations. The comparison between prediction and experiment is presented in some detail, and some reasons for the (relatively few) apparent discrepancies are discussed

[en] This work contains the results of research on the elimination of the depositions containing uranium from the gas centrifuges operating with the rated frequency can be done using the mixture of halogenfluorids-bromine trifluoride and iodine heptafluoride. (authors)

[en] The BrF₆ radical has been obtained by γ irradiation of a mixture of BrF₅ in SF₆. The ESR spectrum was obtained and used to confirm the identity of the radical and to obtain hyperfine coupling constants. (AIP)

No abstract available

[en] Short note

[en] Alkali and alkaline earth metal tetrafluorobromates M"IBrF_4, M"I"I(BrF_4)_2 (M"I = Na-Cs, M"I"I = Sr, Ba) can be synthesized from the respective fluorides and BrF_3. By the reaction of CsF with an excess of BrF_3, the compound cesium tetrafluoridobromate(III) bromine trifluoride (1/1), CsBr_2F_7 (1), was obtained in the form of a colorless powder and as single crystals. Shown by X-ray diffraction on single crystals, its Br_2F_7"- anion is neither planar, nor is its Br-μ-F-Br unit linear, as previously deduced by Raman spectroscopy. In stoichiometric reactions of CsF with BrF_3, the compound cesium tetrafluoridobromate(III), CsBrF_4 (2), was obtained as a colorless powder. Compound 2 can also be obtained from compound 1 by evacuation. The crystal structure of CsBrF_4 (2) was elucidated by Rietveld refinement on its X-ray powder pattern. Its structure is not isotypic to MBrF_4 (M = Na, K, Rb, NO) but isotypic to CsAuF_4. CsBr_2F_7 is, however, not isostructural to CsAu_2F_7. (Copyright copyright 2013 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim)