Ein cyclisches Carbodiphosphoran und eine offenkettige Vergleichsverbindung
The cyclic carbodiphosphorane 8 is prepared from bis(diphenylphosphino)methane (1) and 1,3-dibromopropane, via a diphosphonium salt 6 and a semiquaternary salt 7, throug transylidation with salt-free trimethyl methylene phosphorane.The structure is establ