Synthesis and structure of the first stable phosphabismuthene

Article abstract of DOI:10.1002/1521-3773(20020104)41:1<139::AID-ANIE139>3.0.CO;2-3

The exceedingly different size of p orbitals is overcome in the novel doubly bonded system between phosphorus and bismuth atoms that occurs in the first stable phosphabismuthene 1. Compound 1 was obtained from the condesation reaction of Mes*PH₂ with an overcrowed dibromobismuthane by using 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) as a base (see scheme).