Synthesis and Characterization of O,O'-Bis(α-Naphthyl, β-Naphthyl, and 2, 3, 5-Trimethylphenyl)Dithiophosphate Ligands

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O,O′-Bis(α-Naphthyl, β-Naphthyl and 2,3,5-trimethylphenyl) dithiophosphate ligands have been isolated as triethylammonium salts, (α-C10H7O-, β-C10H7O, and (CH3)3C6H2O)2PS2HNEt3, by the reaction of α-C10H7OH, β-C10H7OH, or (CH3)3C6H2OH with P2S5 in presence of Et3N, in 4:1:2 molar ratio in chloroform under anhydrous conditions. Acidic form of these ligands, (α-C10H7O-, β-C10H7O-, or (CH3)3C6H2O)2PS2H, have been obtained by the direct reaction of α-C10H7OH, β-C10H7OH-, or (CH3)3C6H2OH with P2S5 in 4:1 molar ratio in presence of microwaves under solvent-free conditions. Both forms of the ligands have been converted into corresponding sodium salts, (α -C10H7O-, β-C10H7O-, or (CH3)3C6H2O)2PS2Na. These compounds have been characterized by elemental analyses (C, H, N, and S) and mass, IR, and NMR (1H, 13C and 31P) spectroscopic studies. Supplemental materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfur, and Silicon and the Related Elements to view the free supplemental file.