Generation of aminoborane monomers RR ' N=BH2 from amine-boronium cations [RR ' NH-BH2L](+): metal catalyst-free formation of polyaminoboranes at ambient temperature

Owen J. Metters, Andy M. Chapman, Alasdair P. M. Robertson, Christopher H. Woodall, Paul J. Gates, Duncan F. Wass*, Ian Manners

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

44 Citations (Scopus)

Abstract

Protonation of MeRNH center dot BH3 (R = Me or H) with HX (X = B(C6F5)(4), OTf, or Cl), followed by immediate, spontaneous H-2 elimination, yielded the amine-boronium cation salt [MeRNH center dot BH2(OEt2)][B(C6F5)(4)] and related polar covalent analogs, MeRNH center dot BH2X (X = OTf or Cl). These species can be deprotonated to conveniently generate reactive aminoborane monomers MeRN=BH2 which oligomerize or polymerize; in the case of MeNH2 center dot BH3, the two step process gave poly(N-methylaminoborane), [MeNH-BH2](n).

Original languageEnglish
Pages (from-to)12146-12149
Number of pages4
JournalChemical Communications
Volume50
Issue number81
DOIs
Publication statusPublished - 2014

Keywords

  • MOLECULAR-WEIGHT POLYAMINOBORANES
  • FRUSTRATED LEWIS PAIRS
  • FREE HYDROGEN-TRANSFER
  • H BOND ACTIVATION
  • AMMONIA-BORANE
  • ADDITION POLYMERIZATION
  • ANIONIC-POLYMERIZATION
  • BORENIUM CATIONS
  • DEHYDROGENATION
  • MECHANISM

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