Synthesis, characterization, and structure of [GaCl3(NHC)] complexes
The reaction of GaCl3 with 1 equiv of NHC ligand (NHC = N-heterocyclic carbene) at room temperature in pentane yielding the corresponding 1:1 adduct [GaCl3(NHC)] is reported. Using IPr (N,N’-bis(2,6-diisopropylphenyl)imidazol-2-ylidene), IMes (N,N’-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene), and IPrMe (1,3-diisopropyl-4,5-dimethylimidazol-2-ylidene), three NHC-containing GaIII adducts have been synthesized in good yields and fully characterized by 1H and 13C NMR, HRMS, elemental analysis, and X-ray diffraction studies for the first time. The solid-state structure of [GaCl3(IMes)] presented, as a special feature, two different positions of the main molecule with an occupation ratio of 50%. These positions of the molecule are shifted with respect to each other along the c-axis by 0.96 Å.
![Synthesis, characterization, and structure of [GaCl3(NHC)] complexes](https://iciq.org/wp-content/uploads/2014/03/Synthesis-characterization_eng_noticies_articles_2007_58.gif)
N. Marion, E. C. Escudero-Adán, J. Benet-Buchholz, E. D. Stevens, L. Fensterbank, M. Malacria, S. P. Nolan
Organometallics 2007, 26, 3256-3259
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