Stephan and partners have expanded their frustrated Lewis pair concept into carbon dioxide sequestration. Tris(pentafluorophenyl)boron and tri-tert-butylphosphine are mixed in bromobenzene and 1 bar carbon dioxide and the product -described as a phosphonium type of carbamic acid - forms immediately! (DOI). Heating this compound to 80° C releases the gas again.


More recent frustrated Lewis news: a B-N system tackling 1,3-dienes (DOI) or nitrous oxide ( DOI) and a N-B Lewis pair based on lutidine and B(C₆F₅)₃ capable of THF ring-opening (DOI),