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Homolytic N–H Activation of Ammonia: Hydrogen Transfer of Parent Iridium Ammine, Amide, Imide, and Nitride Species
Author(s) -
Markus G. Scheibel,
Josh Abbenseth,
Markus Kinauer,
Frank W. Heinemann,
Christian Würtele,
Bas de Bruin,
Sven Schneider
Publication year - 2015
Publication title -
inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 233
eISSN - 1520-510X
pISSN - 0020-1669
DOI - 10.1021/acs.inorgchem.5b00829
Subject(s) - chemistry , imide , amide , homolysis , iridium , ammonia , nitride , polymer chemistry , medicinal chemistry , inorganic chemistry , organic chemistry , catalysis , radical , layer (electronics)
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.

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