Mono- and Bimetallic Zwitterionic Chromium(0) and Tungsten(0) Allenyls
A series of stable chiral (racemic), formally neutral, zwitterionic mono- and bimetallic M(CO)5[C(OEt)═C═CR(NHC)] (M = Cr, W) σ-allenyls are ready available by the addition of N-heterocyclic carbenes (NHCs) to Cr(0) and W(0) alkynyl Fischer carbene complexes. Different classes of NHCs, (e.g., 1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene, 1,3-bis(2,4,6-trimethylphenyl)imidazolin-2-ylidene, and their six- and seven-membered analogues and 1,3-bis(dimethyl)imidazol-2-ylidene) were employed as nucleophiles in these C-C bond-forming reactions yielding the novel complexes in essentially quantitative yields. A systematic experimental and computational study of the electronic properties of the C…
CCDC 1485045: Experimental Crystal Structure Determination
Related Article: Elena A. Giner, Alicia Santiago, Mar Gómez-Gallego, Carmen Ramírez de Arellano, Rebecca C. Poulten, Michael K. Whittlesey, and Miguel A. Sierra|2015|Inorg.Chem.|54|5450|doi:10.1021/acs.inorgchem.5b00492