640723-20-2Relevant articles and documents
Some chemistry of difluorodiazine
Lustig, Max
, p. 104 - 106 (1965)
Difluorodiazine undergoes reaction with some sulfur oxides and sulfur and phosphorus fluorides and oxyfluorides. These reactions are characterized by fluorination or fluorination with oxygen elimination. The quantitative syntheses of difluoramidosulfuryl fluoride, FSO2NF2, and pentafluorosulfur difluoramine, SF5NF2, and a high yield preparation of sulfuryl bromide fluoride, FSO2Br, are given. The isomerization of trans-N2F2 was accomplished at a temperature lower than formerly described.
Reductive photo-chemical separation of the hexafluorides of uranium and molybdenum
Chemnitz, Tobias,Kraus, Florian,Petry, Winfried,Stene, Riane E.
supporting information, (2020/10/18)
Two new techniques are described for the separation of molybdenum hexafluoride (MoF6) from uranium hexafluoride (UF6). Both separation techniques utilize the differences displayed by the hexafluorides in their ability to absorb light in the near UV region. Because UF6 absorbs light in the near UV region and MoF6 does not, this observation was used to selectively reduce UF6 to uranium pentafluoride (UF5) through irradiation with 395 nm light in the presence of a suitable reducing agent. Two reducing agents were chosen for this study: gaseous, liquid, or super-critical carbon monoxide (CO) and liquid sulfur dioxide (SO2). Since MoF6 is not reduced under the reaction conditions described here, it may be removed via distillation from the uranium-containing sample after complete reduction of UF6 to solid UF5. The molybdenum- and uranium-containing samples were measured for purity through elemental analysis using microwave plasma atomic emission spectroscopy (MP-AES). Elemental analysis showed more than 98.8 % of the Mo had been removed from the U-containing samples. Further analyses of the samples were performed by X-ray powder diffraction and IR spectroscopy.
Fluorine-containing sulfonyl compound as well as intermediate, preparation method and application thereof
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Paragraph 0149; 0150; 0151; 0152; 0153; 0154; 0155, (2018/05/24)
The invention discloses a fluorine-containing sulfonyl compound as well as an intermediate, a preparation method and application thereof. The fluorine-containing sulfonyl compound disclosed by the invention comprises positive ions and negative ions, wherein the positive ions are shown as the formula I. The fluorine-containing sulfonyl compound can react with substrates to effectively synthetize the fluorine-containing sulfonyl compound; the toxicity is low; the preparation is simple; the use is convenient; the fluorine-containing sulfonyl compound is in a solid stable state at normal temperature. In addition, the substrate applicability of the compound is extremely wide, and a phenol compound and an amine compound can be included; the fluorine-containing sulfonyl compound is a unique solidformation reagent capable of realizing the chemical conversion at present, so that important academic and application values are realized. The formula I is shown in the description.
