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- W2003075896 abstract "While halide exchange in (trifluoromethyl)germanium halides, (CF3)nGeX4-n, takes place at ambient temperature, scrambling of the CF3 groups is observed above 135°C. At higher temperatures the CF3 groups are degraded, CF2 being eliminated. Exchange and decomposition rates decrease in the order F>Cl>Br>I. The exchange of both halides and CF3 groups as well as the lower stability of the halides with respect to alkyl or hydrogen derivatives is attributed to the ability of the halides to form bridged transition states. Während Halogenaustausch in (Trifluormethyl)halogengermanen, (CF3nGeX4-n, bereits bei Raumtemperatur erfolgt, wird die übertragung von CF3-Gruppen erst oberhalb von 135°C beobachtet, die bei höheren Temperaturen zunehmend vom Abbau der CF3-Gruppen unter Eliminierung von CF2 überlagert wird. Austausch- und Zersetzungsgeschwindigkeit nehmen in der Reihe X = F>Cl>Br>I ab. Die Ausbildung halogenverbrückter übergangszustände wird als Ursache für den Austausch von Halogenen und CF3-Gruppen sowie die im Vergleich zu Alkyl- oder Wasserstoffderivaten geringere Stabilität diskutiert." @default.
- W2003075896 created "2016-06-24" @default.
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- W2003075896 date "1988-01-01" @default.
- W2003075896 modified "2023-09-26" @default.
- W2003075896 title "Die thermolyse der (trifluormethyl)halogengermane" @default.
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- W2003075896 doi "https://doi.org/10.1016/s0022-1139(00)85058-7" @default.
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