Abstract
Dibisyldiphosphene, 1, one of the least crowded stable diphosphenes, has been obtained in high yield by two new routes starting with fluorophosphines. 1 dimerizes slowly at room temperature, reacts very easily with 2,3-dimethylbutadiene and cyclopentadiene to give cycloadducts 14 and 15, with selenium to form selenadiphosphirane 16, and is reduced by lithium aluminium hydride to give 18.