Abstract Alkali and alkaline earth metal tetrafluorobromates M I BrF 4 , II (BrF ) 2 ( = Na–Cs, Sr, Ba) can be synthesized from the respective fluorides 3 . By reaction of CsF with an excess compound cesium tetrafluoridobromate(III) bromine trifluoride (1/1), CsBr F 7 1 ), was obtained in form a colorless powder as single crystals. Shown by X‐ray diffraction on crystals, its Br – anion is neither planar, nor Br–μ‐F–Br unit linear, previously deduced Raman spectroscopy. In stoichiometric...

Abstract Alkali and alkaline earth metal tetrafluoridobromates M I BrF 4 , II (BrF ) 2 (M = Na–Cs, Sr, Ba) can be synthesized from the respective fluorides 3 . The reaction of BaF with liquid under Freon‐113 leads to formation Ba(BrF as a colorless microcrystalline powder. Here, we discuss its kinetics thermodynamics. compound crystallizes in tetragonal space group $\bar {4}$ 9.65081(11) Å, c 8.03453(13) V 748.32(2) Å Z at 27 °C, it is isotypic Ba(AuF structure contains square planar –...

It was shown that Ba (BrF 4 ) 2 acts like a highly-active brominating agent in case of interaction with p-nitrotoluene, the pure 3-bromo-nitrotoluene is formed. shown, typical electrophilic bromination aromatic compound electron-donating and electron-accepting substituents occurs without any catalysts hard conditions.

This paper is devoted to the problems of application alkali and alkaline-earth metal tetrafluorobromates in organic synthesis. The process Halon 1301 synthesis, which one best fire-extinguishing agents, considered.

It has been shown that Ba (BrF4)2 acted as a highly-active brominating agent. In case of interaction with nitrobenzene, the pure 3-bromo-nitrotoluene is formed. typical electrophilic bromination aromatic compound electron-donating and electron-accepting substituents occurred without any catalysts or hard conditions.

This paper is aimed to the research of thorium purification processes at monazite refinement processes. We have investigated different solution containing with mix rare-earth elements. It was found that application cation resin well- recommended if we want reach highest yields process.

The process of oxidative fluorination a compact iridium metal has been studied. For this purpose, tetrafluoridobromates(III) alkali and alkaline-earth metals were chosen as oxidizing agents with numerous advantages. main results work include the kinetic dependencies for two following processes: 1) interaction molten potassium tetrafluoridobromate; 2) solution tetrafluoridobromate in liquid bromine trifluoride. In both cases it found out that can be transformed into its soluble fluorinated...

It has been observed that Ba (BrF4)2 demonstrated a high reactivity towards normal alkanes from C6H14 to C16H34. found the reactions ran with intensive self-heating and release of elemental bromine. The GC-MS analysis showed main product interaction each alkane was its 3-bromoderivative. optimal parameters have found. heat effects reaction determined by isothermal calorimetric method, it effect bromination increased increase length carbon chain alkane.

It was observed that Ba(BrF4)2 demonstrates a high reactivity towards n-hexane. found the heating reaction mass proceed with intensive self-heating up to 40 °C and release of elemental bromine. The GC-MS analysis showed main product interaction n-hexane is 3-bromohexane. optimal parameters were found. heat effect determined by isothermal calorimetric method, it –1451 kJ/mole. qualitative composition solid precipitate EDXRF XRD analyses. BaF2 formed as only between conditions researched are...

The barium fluorobromate(III) was obtained as the product of interaction between fluoride and bromine(III) trifluoride. heat formation Ba(BrF 4 ) 2 found by isothermal calorimetry method. By TG/DT analysis thermal stability researched. It that this compound is mostly stable in atmosphere or argon up to 250 °C. shown bromine trifluoride its derive compounds with alkali alkali-earth metals fluorides can be applied like a highly-active brominating agent case production various composite...

It was shown, that barium fluorobromate Ba(BrF  4 )  2  brominates hexane with the formation of 3-bromo-hexane high yields. The optimal interaction parameters were found. heat effect reaction determined by isothermal calorimetric method, it is -1451 kJ/mole. found conditions researched are quite unusual for known free-radical hydrogen substitution processes in case alkanes.

Abstract The barium fluorobromate (III) has been obtained as the product of interaction between fluoride and bromine trifluoride. heat formation Ba (BrF4)2 found by isothermal calorimetry method. By TG/DT analysis thermal stability Ba(BrF4)2 researched. It that this compound was mostly stable in atmosphere or argon up to 250 oC.

Abstract CsBrF 4 (I) and CsBr 2 F 7 (II) are prepared by the reaction of stoichiometric amounts CsF BrF 3 (previously published method).

Abstract The title compound is synthesized by the reaction of BaF 2 with liquid BrF 3 under Freon‐113 (PTFE tube, 99% yield).

На территории Оренбургской области плотностные покрышки карбонатной толщи верхнего девона характеризуются фациальной изменчивостью как по разрезу, так и площади их распространения. Эвстатические снижения относительного уровня моря сложный рельеф франско-фаменского времени способствовали вторичным преобразованиям потенциальных флюидоупоров, что в определенных случаях приводило к ухудшению экранирующих свойств. С целью установления характеристик флюидоупоров был проведен комплексный анализ,...