title: Homolytic N-H activation of ammonia: hydrogen transfer of parent iridium ammine, amide, imide, and nitride species.
abstract: The redox series [Ir(n)(NHx)(PNP)] (n = II-IV, x = 3-0; PNP = N(CHCHPtBu2)2) was examined with respect to electron, proton, and hydrogen atom transfer steps. The experimental and computational results suggest that the Ir(III) imido species [Ir(NH)(PNP)] is not stable but undergoes disproportionation to the respective Ir(II) amido and Ir(IV) nitrido species. N-H bond strengths are estimated upon reaction with hydrogen atom transfer reagents to rationalize this observation and are used to discuss the reactivity of these compounds toward E-H bond activation.
authors.affiliation: Institut für Anorganische Chemie, Georg-August-Universität , Tammannstraße 4, 37077 Göttingen, Germany.
authors.forename: Markus G
authors.initials: MG
authors.lastname: Scheibel
authors.affiliation: Institut für Anorganische Chemie, Georg-August-Universität , Tammannstraße 4, 37077 Göttingen, Germany.
authors.forename: Josh
authors.initials: J
authors.lastname: Abbenseth
authors.affiliation: Institut für Anorganische Chemie, Georg-August-Universität , Tammannstraße 4, 37077 Göttingen, Germany.
authors.forename: Markus
authors.initials: M
authors.lastname: Kinauer
authors.affiliation: Department of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander University Erlangen-Nürnberg (FAU) , Egerlandstr. 1, 91058 Erlangen, Germany.
authors.forename: Frank W
authors.initials: FW
authors.lastname: Heinemann
authors.affiliation: Institut für Anorganische Chemie, Georg-August-Universität , Tammannstraße 4, 37077 Göttingen, Germany.
authors.forename: Christian
authors.initials: C
authors.lastname: Würtele
authors.affiliation: Homogeneous and Supramolecular Catalysis group, van 't Hoff Institute for Molecular Sciences (HIMS), University of Amsterdam , 1090 GD Amsterdam, The Netherlands.
authors.forename: Bas
authors.initials: B
authors.lastname: de Bruin
authors.affiliation: Institut für Anorganische Chemie, Georg-August-Universität , Tammannstraße 4, 37077 Göttingen, Germany.
authors.forename: Sven
authors.initials: S
authors.lastname: Schneider