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CF3−ist eine langlebige Spezies! Mehr als sechs Jahrzehnte wurde CF3− für eine kurzlebige und kinetisch instabile Spezies in kondensierter Phase gehalten. In der Zuschrift auf S. 11759 ff. beschreiben G. K. S. Prakash et al. die ersten konkreten Beweise für die Persistenz des Trifluormethanid‐Anions in THF mittels NMR‐Spektroskopie. Die Experimente belegen, dass CF3− mit [K([18]Krone‐6)]+ als Gegenion...
The trifluoromethanide anion is the postulated key intermediate in nucleophilic trifluoromethylation reactions. However, for more than six decades, the trifluoromethanide anion was widely believed to exist only as a short‐lived transient species in the condensed phase. It has now been prepared in bulk for the first time in THF solution. The trifluoromethanide anion with the [K(18‐crown‐6)]+ cation...
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