phosphirenes
Phosphirenes are a class of highly reactive, unsaturated organophosphorus compounds containing a three-membered ring with one phosphorus atom and two carbon atoms, and a carbon-carbon double bond. They are the phosphorus analogs of carbenes and are characterized by a P-C-C ring structure. The general formula for a phosphirene is C2PH. Due to the inherent strain in the three-membered ring and the unusual bonding involved, phosphirenes are typically unstable and have only been isolated and characterized under specific conditions, often at low temperatures or as transient intermediates.
The synthesis of phosphirenes is challenging. Early attempts often involved the reaction of phosphines with strained
Phosphirenes are highly reactive species due to ring strain and the presence of both a P-C double