Abstract
The formation of a bond between an electron pair donor (Lewis base) and an electron pair acceptor (Lewis acid) is one of the first chemical reactions that a young scientist learns. When a Lewis acid and base are prevented from interacting, “frustration” arises which allows for some remarkable reactivity in a concept called frustrated Lewis pairs (FLPs). FLPs can react with a variety of molecules. For example, FLPs cause the heterolytic cleavage of σ-bonds, such as in HH, SiH, BH, CH, CC, CO and C-halide bonds. In addition, FLPs add to π-bonds via 1,2-, 1,3-, 1,4- and 1,1- addition type processes. By using selected examples, this review provides an overview of the extraordinary reactivity and applications of FLPs.
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