Dehydrogenation of amine–boranes catalyzed by a PCsp3P pincer iridium complex

Vladislava A. Kirkina, Elena S. Osipova, Oleg A. Filippov, Gleb A. Silantyev, Dmitri Gelman, Elena S. Shubina, Natalia V. Belkova*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Dibenzobarrelene-based PCsp3P pincer iridium complex bearing dangling CH2OH groups, ((PCsp3PCH2OH)IrH(Cl), catalyzes the dehydrogenation of amine–boranes at the reaction rate changing counter intuitively in the order: Me2NH·BH3 > > ButNH2·BH3 > NH3·BH3. The spectral (IR and NMR) data and DFT/M06 calculations have revealed that the binding of amine–boranes to the dangling OH group leads to an additional stabilization of the Ir···OH bond, thus hampering the dehydrogenation reaction, whereas the amine–borane coordination to iridium entails a fac- to mer-transformation of the complex and initiates the catalytic H2 evolution.

Original languageAmerican English
Pages (from-to)276-278
Number of pages3
JournalMendeleev Communications
Volume30
Issue number3
DOIs
StatePublished - 1 May 2020

Bibliographical note

Publisher Copyright:
© 2020

Keywords

  • DFT calculations
  • amine–boranes
  • catalytic dehydrogenation
  • iridium pincer complexes
  • molecular spectroscopy

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