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Selenium fluoride may refer to: Selenium tetrafluoride (selenium(IV) fluoride), SeF 4; Selenium hexafluoride (selenium(VI) fluoride), SeF 6 This page was last edited ...
Eli Kaj Roholm was the son of Niels Christian Roholm, a Danish sea captain from Odense, and Hilda Vilhelmine Sabinsky, a Polish Jewish immigrant. He nonetheless continued in his capacity as Deputy Health Commissioner of Copenhagen during the Nazi occupation of Denmark.
Pentafluoroselenium hypofluorite can also formed from selenium oxyfluoride and fluorine gas in the presence of potassium fluoride. [4] [5] SeOF 2 + KF → K + [SeOF 3] − — F 2 → K + [SeOF 5] − — F 2 → KF + SeOF 6. The reaction of fluorine gas and Hg(OSeF 5) 2 produces SeOF 6 in much higher yield and with less SeF 6. [3]
Selenium is found in metal sulfide ores, where it substitutes for sulfur. Commercially, selenium is produced as a byproduct in the refining of these ores. Minerals that are pure selenide or selenate compounds are rare. The chief commercial uses for selenium today are glassmaking and pigments. Selenium is a semiconductor and is used in photocells.
trineodymium fluoride tetraselenite Nd 3 (SeO 3) 4 F hexagonal P6 3 mc: a=10.515 c=7.1211 [23] trisamarium fluoride tetraselenite Sm 3 (SeO 3) 4 F hexagonal P6 3 mc: a=10.474 c=7.0224 [23] trigadolinium tetraselenite fluoride Gd 3 (SeO 3) 4 F 4:1 hexagonal P6 3 mc: a = 10.443 b = 6.9432 Z=2 [24] [1] tridysprosium tetraselenite fluoride Dy 3 ...
Selenium tetrafluoride (Se F 4) is an inorganic compound.It is a colourless liquid that reacts readily with water. It can be used as a fluorinating reagent in organic syntheses (fluorination of alcohols, carboxylic acids or carbonyl compounds) and has advantages over sulfur tetrafluoride in that milder conditions can be employed and it is a liquid rather than a gas.
Seleninyl fluoride can be produced by the reaction of selenium oxychloride and potassium fluoride. [3] 2 KF + SeOCl 2 → 2 KCl + SeOF 2. It can also be produced by the reaction of selenium tetrafluoride with water or selenium dioxide. [2] SeF 4 + H 2 O → SeOF 2 + 2 HF SeF 4 + SeO 2 → 2 SeOF 2
Selenoyl fluoride, selenoyl difluoride, selenium oxyfluoride, or selenium dioxydifluoride is a chemical compound with the formula SeO 2 F 2. Structure