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Sterically Encumbered Iridium Bis(N-heterocyclic carbene) Complexes: Air-Stable 14-Electron Cations and Facile Degenerate C-H Activation

Abstract:

Cationic Ir(III) systems supported by a bis(expanded NHC) framework and featuring both agostic C-H and cis alkyl/hydride ligand sets have been targeted by protonation of the corresponding bis(alkyl) hydride complexes. Remarkably, the steric shielding afforded by the NHC substituents is such that these and related putative 14-electron cations are air and moisture stable. In solution, degenerate fluxional exchange is brought about by reversible σ-bond activation within the agostic alkyl C(sp3)-...

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Publication status:
Published

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Publisher copy:
10.1021/om301060h

Authors


Phillips, N More by this author
Riddlestone, I More by this author
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Institution:
University of Oxford
Department:
Oxford, MPLS, Chemistry, Inorganic Chemistry
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Journal:
ORGANOMETALLICS
Volume:
31
Issue:
23
Pages:
8075-8078
Publication date:
2012-12-10
DOI:
EISSN:
1520-6041
ISSN:
0276-7333
URN:
uuid:02133fc2-bcc3-4d92-b1c1-092bc043416d
Source identifiers:
368123
Local pid:
pubs:368123
Language:
English

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