Selective B-H versus N-H bond activation in ammonia borane by [Ir(dppm)<inf>2</inf>]OTf

Andrea Rossin, Maria Caporali, Luca Gonsalvi, Annalisa Guerri, Agustí Lledós, Maurizio Peruzzini, Fabrizio Zanobini

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Abstract

Ammonia borane (AB, NH3-BH3) was activated selectively on the boron hydrogen atoms by [Ir(dppm)2]OTf, as shown by variable-temperature 31P, 11B and 1H NMR studies, to yield cis- and irans-[Ir(H)2(dppni)2] OTí dihydrides, X-ray crystal structures of these complexes were obtained. DFT calculations suggest: the key reaction intermediate to be a Lewis base (L) stabilised adduct, cis-[Ir(H) (BH2.L) (dppm) 2]+ © 2009 Wiley-VCH Verlag GmbH & Co. KGaA.
Original languageEnglish
Pages (from-to)3055-3059
JournalEuropean Journal of Inorganic Chemistry
Issue number21
DOIs
Publication statusPublished - 1 Jul 2009

Keywords

  • Boranes
  • Hydrogen storage
  • Iridium
  • NMR spectroscopy
  • P ligands

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    Rossin, A., Caporali, M., Gonsalvi, L., Guerri, A., Lledós, A., Peruzzini, M., & Zanobini, F. (2009). Selective B-H versus N-H bond activation in ammonia borane by [Ir(dppm)<inf>2</inf>]OTf. European Journal of Inorganic Chemistry, (21), 3055-3059. https://doi.org/10.1002/ejic.200900465