This review provides a summary, including spectroscopic and structural data, of the metal complexes accessible with mono-oxide, sulfide and selenide bis(diphenylphosphino)amine (DPPA)-based ligands and their N-substituted/functionalized derivatives. The nature of the E (O, S ,Se) donor in these mixed P,P=E donor ligands strongly influences the nature of the resulting metal complexes, which can incorporate the DPPA-type ligand(s) as P-monodentate or P,E-chelate. When available, a comparison between the reactivity of the mixed P,P=E and parent P,P systems is given. The catalytic applications of P,E-supported metal complexes are also discussed.