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Bypassing a highly unstable frustrated Lewis pair: dihydrogen cleavage by a thermally robust silylium–phosphine adduct
Journal article

Bypassing a highly unstable frustrated Lewis pair: dihydrogen cleavage by a thermally robust silylium–phosphine adduct

Thomas J Herrington, Bryan J Ward, Laurence R Doyle, Joe McDermott, Andrew J. P White, Patricia A Hunt and Andrew E Ashley
Chemical communications (Cambridge, England), Vol.50(84), pp.12753-12756
2014
Handle:
https://hdl.handle.net/2376/115398
PMID: 25204297

Abstract

The thermally robust silylium complex [iPr3Si–PtBu3]+[B(C6F5)4]− (1) activates H2/D2 at 90 °C (PhCl); no evidence for dissociation into the separated Lewis pair is found. DFT calculations show H2 cleavage proceeds via Si–P bond elongation to form an encounter complex directly from the adduct, thus avoiding the non-isolable iPr3Si+–PtBu3 FLP.

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