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15 p, 664.2 KB C-H Oxidative Addition of Bisimidazolium Salts to Iridium and Rhodium Complexes, and N-Heterocyclic Carbene Generation. A Combined Experimental and Theoretical Study / Viciano, Mónica (Universitat Jaume I. Departament de Química Inorgànica i Orgànica) ; Lledós, Agustí (Lledós i Falcó) (Universitat Autònoma de Barcelona. Departament de Química)
A series of bis-N-heterocyclic carbenes of rhodium and iridium have been obtained and characterized. The formation of the M-C bond has been studied according to experimental and theoretical data, showing that two different mechanisms are operative for the first (single proton deprotonation of the bisimidazolium salt, or oxidative addition followed by deprotonation of the metal hydride) and second (oxidative addition of the second bisimidazolium C-H bond, yielding a NHC-IrIII-H species) metalation processes. [...]
2006 - 10.1021/om051004l
Organometallics, Vol. 25, Núm. 5 2006) , p. 1120-1134  

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