title: Generation of aminoborane monomers RR'N=BH2 from amine-boronium cations [RR'NH-BH2L](+): metal catalyst-free formation of polyaminoboranes at ambient temperature.
abstract: Protonation of MeRNH·BH3 (R = Me or H) with HX (X = B(C6F5)4, OTf, or Cl), followed by immediate, spontaneous H2 elimination, yielded the amine-boronium cation salt [MeRNH·BH2(OEt2)][B(C6F5)4] and related polar covalent analogs, MeRNH·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·BH3, the two step process gave poly(N-methylaminoborane), [MeNH-BH2]n.
authors.affiliation: School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK. ian.manners@bristol.ac.uk duncan.wass@bristol.ac.uk.
authors.forename: Owen J
authors.initials: OJ
authors.lastname: Metters
authors.forename: Andy M
authors.initials: AM
authors.lastname: Chapman
authors.forename: Alasdair P M
authors.initials: AP
authors.lastname: Robertson
authors.forename: Christopher H
authors.initials: CH
authors.lastname: Woodall
authors.forename: Paul J
authors.initials: PJ
authors.lastname: Gates
authors.forename: Duncan F
authors.initials: DF
authors.lastname: Wass
authors.forename: Ian
authors.initials: I
authors.lastname: Manners