New organophosphorus ligands with SPNSO skeleton and their copper(I) complexes - Crystal and molecular structures of (SPPh2)(O2SPh)NH, [(Ph3P)(2)Cu{(SPPh2)(O2SMe)N}] and [(Ph3P)(2)Cu{(SPPh2) (O2SC6H4Me-4)N}] center dot 0.5C(6)H(5)CH(3)

摘要

The new phosphorus ligand (SPPh2)(O2SPh)NH (1) was prepared by reacting Li[HN(S)PPh2] and PhSO2Cl and was easily converted into its potassium salt, K[(SPPh2)(O2SPh)N] (2), by treatment with t-BuOK. Copper(l) complexes, [(Ph3P)(2)Cu{(SPPh2)(O2SR)N}] [R = Me (3), Ph (4), C6H4Me-4 (5)], were obtained from (Ph3P)(2)CuNO3 and the potassium salt of the corresponding acid in a 1: 1 molar ratio. All compounds were characterized by multinuclear (H-1, C-13, P-31) NMR spectroscopy. The molecular structures of the free acid 1, as well as of complexes 3 and 5 . 0.5C(6)H(5)CH(3), were established by single-crystal X-ray diffraction. The acidic proton in 1 is attached to nitrogen and the molecular units are associated through intermolecular S = O center dot center dot center dot H-N hydrogen bonding [H center dot center dot center dot O 2.098 angstrom], resulting in dimeric units. For the copper complexes, monomeric structures with bidentate [(SPPh2)(O2SR)N](-) ligands were found. (c) 2007 Elsevier B.V. All rights reserved.