Synthesis and characterization of copper(I) complexes from triphenylphosphine and isatin Schiff bases of semi- and thiosemicarbazide

The reaction of isatin-3-thiosemicarbazone (ITC, 1) or isatin-3-semicarbazone (ISC, 2) with nitrato bis(triphenylphosphine) copper(I) gave the four coordinate copper(I) complexes [Cu(PPh3)(2)(ITC)]NO3 (3) and [Cu(PPh3)(2)(ISC)]NO3 (4). The synthesized complexes were characterized by FT-IR, UV-VIS, Raman and elemental analysis. The crystal structure of 3 was investigated by single crystal X-ray diffraction. The ITC coordinates to the copper(I) ion in a bidentate fashion via the N(imine) and S atoms which along with two triphenylphosphine ligands form a tetracoordinate complex. The complex has a distorted tetrahedral coordination environment. Crystal data at 150.0 K: space group P2(1)/c with a = 12.5777(4), b = 15.2062(5), c = 21.9057(7) angstrom, beta = 95.628(3)degrees, Z = 4, R-1 = 0.049. [GRAPHICS] .