Synthesis and Characterization of New N,N-Bis(diphenylphosphino)naphthylamine Chalcogenides: X-Ray Structure of C10H7-1-N{P(S)Ph-2}(2)

The reaction of 1-naphthylamine with two equivalents of chlorodiphenylphosphine in the presence of triethylamine gave the C10H7-1-N(PPh2)(2) (1) ligand, which reacts with aqueous H2O2, elemental sulfur and gray selenium in toluene (1:2 molar ratio) to form the corresponding new chalcogenides C10H7-1-N{P(O)Ph-2}(2) (2), C10H7-1-N{P(S)Ph-2}(2) (3), and C10H7-1-N{P(Se)Ph-2}(2) (4). Compounds 2-4 were identified and characterized by multinuclear NMR spectroscopy (H-1, C-13, P-31 NMR) and elemental analysis. Crystal structure determination of 3 was carried out.