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- W2035257478 abstract "Durch Umsetzung der entsprechenden Alkalimetallfluoride mit Schwefeldioxid in Acetonitril bei 75 °C wurden erstmals Einkristalle von Kalium- und Rubidiumfluorosulfit erhalten. Nach den Röntgenstrukturanalysen sind beide Verbindungen isotyp (monoklin, P21/m, Z = 2, KSO2F: a = 696,2(2), b = 566,3(2), c = 465,8(1) pm, β = 107,73(2)°; RbSO2F: a = 717,2(1), b = 586,7(1), c = 484,0(1) pm, β = 107,14(1)°) und strukturell analog Kaliumchlorat aufgebaut. Im Gegensatz zu Kaliumfluoroselenit, in welchem die komplexen Anionen über die Fluoratome unsymmetrisch zu linearen Ketten verbrückt werden, liegen die Fluorosulfitanionen isoliert vor. Der S–F-Abstand liegt mit 159,1(2) pm (KSO2F) im Bereich bekannter S–F-Einfachbindungen, der S–O-Abstand von 152,6(2) pm weist auf eine S–O-Bindungsordnung von 1,5 hin. Crystal Structures of Monofluorosulfites MSO2F (M = K, Rb) Single crystals of potassium and rubidium fluorosulfite were obtained for the first time by reacting the alkali metal fluorides with sulfur dioxide in acetonitrile at 75 °C. According to the results of X-ray structure determinations they are isotypic (monoclinic, P21/m, Z = 2, KSO2F: a = 696.2(2), b = 566.3(2), c = 465.8(1) pm, β = 107.73(2)°, RbSO2F: a = 717.2(1), b = 586.7(1), c = 484.0(1) pm, β = 107.14(1)°) and structurally analogous to potassium chlorate. In contrast to potassium fluoroselenite in which the complex anions are polymerized to linear chains by unsymmetric fluorine bridges, the fluorosulfite anion is isolated. The S–F-distance of 159.1(2) pm (KSO2F) corresponds to a S–F single bond, the S–O-distance of 152.6(2) pm indicates a bond order of 1.5." @default.
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- W2035257478 date "1999-03-01" @default.
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- W2035257478 title "Kristallstrukturen der Monofluorosulfite MSO2F (M = K, Rb)" @default.
- W2035257478 doi "https://doi.org/10.1002/(sici)1521-3749(199903)625:3<385::aid-zaac385>3.0.co;2-p" @default.
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