Synthesis, co-ordination chemistry and crystallographic studies of somebis(aminophosphines)

1,2-Bis(diphenylphosphinoamino)benzene 1 and 3,4-bis(diphenylphosphinoamino)toluene 2 have been prepared; 1 is oxidised by sulfur or selenium to C6H4(NHPPh2S)(2)-1,2 3 and C6H4(NHPPh2Se)(2)-1,2 4 and by sulfur and selenium to C6H4(NHPPh2S)(NHPPh2Se)-1,2 5. The napthalene compounds C10H6(NHPPh2S)(2)-1,8 6, C10H6(NHPPh2Se)(2)-1,8 7, C10H6(NHPPh2S)(NHPPh2Se)-1,8 8 and the ethane compound C2H4(NHPPh2S)(2)-1,2 9 have also been prepared. The co-ordination of 2 to Mo-0, Pd-II, Pt-II and Au-I, i.e. in cis-[Mo(CO)(4)L], cis-[MCl2L] (M = Pd or Pt) and [(AuCl)(2)L] [L = MeC6H3(NHPPh2)(2)-3,4] is also described. The crystals structures of representative examples have been determined.