Preparation and Characterization of P2BCh Ring Systems (Ch=S, Se) and Their Reactivity with N-Heterocyclic Carbenes - Graham, Cameron M. E.; Millet, Clément R. P.; Price, Amy N.; Valjus, Juuso; Cowley, Michael J.; Tuononen, Heikki; Ragogna, Paul J. (Wiley-VCH., 2018)