Phosphorus–fluorine compounds. Part XI. Further studies on alkylaminodifluorophosphines
Abstract
Secondary amines react with difluorotrichloromethylphosphine–molybdenum carbonyl complexes (CCl3PF2)nMo(CO)6–n(n= 2,3) to give chloroform and the corresponding dialkylaminodifluorophosphine–molybdenum carbonyl complexes (R2NPF2)nMo(CO)6–n. Evidence for co-ordination via phosphorus rather than nitrogen in these complexes is discussed. Methylaminodifluorophosphine CH3NHPF2 has been synthesised by two routes: (a) primary aminolysis of difluorotrichloromethylphosphine and (b) equilibration between methylamine and methylaminobisdifluorophosphine CH3N(PF2)2. 31P, 19F, and 1H n.m.r. spectra are presented and discussed.