Reactivity of dimeric P/Al-based lewis pairs toward carbon dioxide and tert -butyl isocyanate

Federica Bertini, Frank Hoffmann, Christian Appelt, Werner Uhl, Andreas W. Ehlers, J. Chris Slootweg, Koop Lammertsma

Research output: Contribution to journalArticlepeer-review

69 Citations (Scopus)


The methylene-bridged phosphinoalane tBu2PCH 2AlMe2 exists as a stable, dimeric Lewis adduct, which reacts with carbon dioxide and tert-butyl isocyanate at room temperature, forming five-membered heterocycles; we explored the reaction pathways of these heterocycles with computational chemistry. A carboxylate dimer results when excess carbon dioxide is used. A novel mechanism is presented for this process that presumes the cooperative effect of two CO2 molecules in which the FLP captured CO2 is expelled on insertion of a second molecule into the Al-C bond of the initial heterocycle.

Original languageEnglish
Pages (from-to)6764-6769
Number of pages6
Issue number22
Publication statusPublished - 25 Nov 2013
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry


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