Synthesis and Characterization of New N -(Diphenylphosphino)-Naphthylamine Chalcogenides: X-Ray Structures of (1-NHC 10 H 7 )P(Se)Ph 2 and Ph 2 P(S)OP(S)Ph 2.

The reaction of 1-naphthylamine with one equivalent of chlorodiphenylphosphine in the presence of triethylamine gave the (1-NHC10H7)PPh2 (1) ligand. Refluxing of 1 with elemental sulfur or grey selenium in toluene (1:1 molar ratio) afforded (1-NHC10H7)P(S)Ph2 (2) and (1-NHC10H7)P(Se)Ph2 (3), respectively. Moreover, the byproduct {Ph2P(S)}2O (4) was isolated from the reaction of 1 with elemental sulfur. Compounds 1–3 were identified and characterized by multinuclear (1H, 13C, 31P, 77Se) NMR spectroscopy, mass spectrometry, and elemental analysis. Crystal structure determinations of 3 and 4 were carried out. [ABSTRACT FROM AUTHOR]