title: Trapping Rare and Elusive Phosphinidene Chalcogenides.
abstract: Four-membered rings with a P2Ch2core (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 P2Ch2rings can liberate phosphinidene chalcogenides.
authors.affiliation: Department of Chemistry and the Centre for Advanced Materials and Biomaterials Research, Western University, 1151 Richmond St., London, Ontario, N6A 5B7, Canada.
authors.forename: Cameron M E
authors.initials: CME
authors.lastname: Graham
authors.affiliation: Department of Chemistry and the Centre for Advanced Materials and Biomaterials Research, Western University, 1151 Richmond St., London, Ontario, N6A 5B7, Canada.
authors.forename: Taylor E
authors.initials: TE
authors.lastname: Pritchard
authors.affiliation: Department of Chemistry and the Centre for Advanced Materials and Biomaterials Research, Western University, 1151 Richmond St., London, Ontario, N6A 5B7, Canada.
authors.forename: Paul D
authors.initials: PD
authors.lastname: Boyle
authors.affiliation: Department of Chemistry, NanoScience Center, University of Jyväskylä, P.O. Box 35, 40014, University of Jyväskylä, Finland.
authors.forename: Juuso
authors.initials: J
authors.lastname: Valjus
authors.affiliation: Department of Chemistry, NanoScience Center, University of Jyväskylä, P.O. Box 35, 40014, University of Jyväskylä, Finland.
authors.forename: Heikki M
authors.initials: HM
authors.lastname: Tuononen
authors.affiliation: Department of Chemistry and the Centre for Advanced Materials and Biomaterials Research, Western University, 1151 Richmond St., London, Ontario, N6A 5B7, Canada.
authors.forename: Paul J
authors.initials: PJ
authors.lastname: Ragogna
keywords: chalcogens; main group elements; phosphinidene chalcogenides; phosphorus; phosphorus chalcogen heterocycles