Since their discovery, FLPs have received considerable attention for their potential to activate small molecules and applications in catalysis in the absence of transition-metals.&lt;span style="font-size:10.8333px"&gt; &lt;/span&gt;Significant exploration of the tunability of FLPs has been done. However the main advances are focused on the nature of the LBs, whereas LA counterparts are less versatile and mostly limited to perfluorinated alkyl/aryl boranes and alanes. We report the reactivity between the water stable Lewis acidic trioxatriangulenium ion (TOTA<sup>+</sup>) and a series of Lewis bases such as phosphines and N-heterocyclic carbene (NHC). The nature of the Lewis acid–base interaction was analyzed <i>via</i> variable temperature (VT) NMR spectroscopy, single-crystal X-ray diffraction, UV-visible spectroscopy, and DFT calculations.

Carbon-based Lewis Acid in frustrated Lewis pair chemistry

ACS Fall 2021

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