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- W2106747901 abstract "Aus äquimolaren Mischungen von B2F4 und MenN(SiMe3)3-n (n = 0–3) entstehen bei tiefen Temperaturen die Monoadditionsprodukte 1–4. Aus dem Addukt 2 (n = 2) bildet sich durch Abspaltung von Me3SiF das dimere monosubstituierte Diboran 8, das bei Raumtemperatur langsam in das Aminoboran 6 und (BF)n zerfällt. Der Verlauf der Reaktionen wurde mit Hilfe der 11B- und 19F-NMR-Spektroskopie sowie durch Dampfdruckmessungen untersucht. Bei der Umsetzung von B2Cl4 mit PCl5 bzw. [Me4N]Cl in flüssigem Chlorwasserstoff bei 0°C bilden sich nach Aussage der 11B- und 31P-NMR-Spektren nicht [PCl4]2+[B2Cl6]2− bzw. [Me4N]2+[B2Cl6]2−, sondern [PCl4]+[BCl4]−, PCl3 und BCl3 bzw. [Me4N]+[BCl4]− und BCl3 neben (BCl)n. Addition and Substitution Reactions at Tetrafluoro- and Tetrachlorodiborane(4) From equimolar mixtures of B2F4 and MenN(SiMe3)3-n (n = 0–3) the mono-addition products 1–4 are formed at low temperatures. By elimination of Me3SiF the adduct 2 gives the dimeric monosubstituted diborane 8, which slowly decomposes at room temperature to the aminoborane 6 and (BF)n. The course of the reactions was studied by means of 11B and 19F NMR spectroscopy and by measuring the vapor pressures. According to the 11B and 31P NMR spectra the reaction of B2Cl4 with PCl5 or [Me4N]Cl in liquid hydrogen chloride at 0°C does not yield [PCl4]2+[B2Cl6]2− or [Me4N]2+[B2Cl6]2− but gives [PCl4]+[BCl4]−, PCl3 and BCl3 or [Me4N]+[BCl4]− and BCl3 besides (BCl)n." @default.
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- W2106747901 date "1991-01-01" @default.
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- W2106747901 title "Additions- und SubstitutionsReaktionen an Tetrafluor- und Tetrachlordiboran(4)" @default.
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- W2106747901 doi "https://doi.org/10.1002/zaac.19915920104" @default.
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