What can NMR spectroscopy of selenoureas and phosphinidenes teach us about the П-accepting abilities of N-heterocyclic carbenes?
S.V.C. Vummaleti, D.J. Nelson, P. Poater, A. Gómez-Suárez, D.B. Cordes, A.M.Z. Slawin, S.P. Nolan, L. Cavallo
Chem. Sci., DOI: 10.1039/C4SC03264K, (2015)