Trapping Rare and Elusive Phosphinidene Chalcogenides
Graham, C. M. E., Pritchard, T. E., Boyle, P. D., Valjus, J., Tuononen, H., & Ragogna, P. J. (2017). Trapping Rare and Elusive Phosphinidene Chalcogenides. Angewandte Chemie International Edition, 56(1), 6236-6240. https://doi.org/10.1002/anie.201611196
Published inAngewandte Chemie International Edition
© 2017 Wiley-VCH Verlag GmbH & Co. This is a final draft version of an article whose final and definitive form has been published by Wiley. Published in this repository with the kind permission of the publisher.
Four-membered rings with a P2Ch2 core (Ch=S, Se) and phosphorus in the +3 oxidation state have been synthesized. The utility of these rings as a source of monomeric phosphinidene chalcogenides was probed by the addition of an N-heterocyclic carbene, resulting in a base-stabilized phosphinidene sulfide. Similarly, persistence of the phosphinidene selenide in solution was shown through cycloaddition chemistry with 2,3-dimethylbutadiene at elevated temperatures. The observed reactivity was explained by detailed computational work that established the conditions upon which the P2Ch2 rings can liberate phosphinidene chalcogenides.