A tert-butyl-substituted amino-borane bound to an iridium fragment: A latent source of free H2Bdouble bond; length as m-dashNtBuH

Release of the primary amino-borane H2Bdouble bond; length as m-dashNtBuH from [Ir(PCy3)2(H)2(η2-H2Bdouble bond; length as m-dashNtBuH)]View the MathML source[BAr4F], formed from dehydrogenation of [Ir(PCy3)2(H)2(η2-H3B·NtBuH2)][View the MathML sourceBAr4F], results in the eventual formation of the corresponding cyclic borazine [HBNtBu]3. Observations point to the fact that off-metal hydrogen redistribution reactions play a major role in the final product formation, with H3B·NtBuH2 being formed alongside [HBNtBu]3.