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- Title
Three-Coordinate Nickel(I) Complexes Stabilised by Six-, Seven- and Eight-Membered Ring N-Heterocyclic Carbenes: Synthesis, EPR/DFT Studies and Catalytic Activity.
- Authors
Page, Michael J.; Lu, Wei Y.; Poulten, Rebecca C.; Carter, Emma; Algarra, Andrés G.; Kariuki, Benson M.; Macgregor, Stuart A.; Mahon, Mary F.; Cavell, Kingsley J.; Murphy, Damien M.; Whittlesey, Michael K.
- Abstract
Comproportionation of [Ni(cod)2] (cod=cyclooctadiene) and [Ni(PPh3)2X2] (X=Br, Cl) in the presence of six-, seven- and eight-membered ring N-aryl-substituted heterocyclic carbenes (NHCs) provides a route to a series of isostructural three-coordinate NiI complexes [Ni(NHC)(PPh3)X] (X=Br, Cl; NHC=6-Mes 1, 6-Anis 2, 6-AnisMes 3, 7- o-Tol 4, 8-Mes 5, 8- o-Tol 6, O-8- o-Tol 7). Continuous wave (CW) and pulsed EPR measurements on 1, 4, 5, 6 and 7 reveal that the spin Hamiltonian parameters are particularly sensitive to changes in NHC ring size, N substituents and halide. In combination with DFT calculations, a mixed SOMO of ∣3d
- Publication
Chemistry - A European Journal, 2013, Vol 19, Issue 6, p2158
- ISSN
0947-6539
- Publication type
Article
- DOI
10.1002/chem.201202950