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The mechanistic pathways towards these rings are explained by detailed computational work that confirmed the preference for the formation of P\u2212P, not P\u2212B, bonded systems, which seems counterintuitive given that both phosphorus atoms contain bulky ligands. The reactivity of the newly synthesized heterocycles, as well as that of the known (RPCh)<jats:sub><jats:italic>n<\/jats:italic><\/jats:sub> rings (<jats:italic>n<\/jats:italic>=2, 3), was probed by the addition of N\u2010heterocyclic carbenes, which revealed that all investigated compounds can act as sources of low\u2010coordinate phosphorus species.<\/jats:p>","DOI":"10.1002\/chem.201704337","type":"journal-article","created":{"date-parts":[[2017,11,9]],"date-time":"2017-11-09T03:56:41Z","timestamp":1510199801000},"page":"672-680","source":"Crossref","is-referenced-by-count":34,"title":["Preparation and Characterization of P<sub>2<\/sub>BCh Ring Systems (Ch=S, Se) and Their Reactivity with N\u2010Heterocyclic Carbenes"],"prefix":"10.1002","volume":"24","author":[{"given":"Cameron M. 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