Syntheses and X-ray crystal structures of new copper(I) and silver(I) complexes containing thione ligands

The reaction of [(Ph3P)(2)CuCl](2) with 4-amino-6-methyl-1,2,4-triazine-thi one-5-one (AMTTO, 1) in methanol and further recrystallization from methano l/acetone solution gives [(C4H4N3SON(=CMe2)Cu(PPh3)(2)Cl] (2) as a neutral complex. [(C4H4N3SON(=CMe2)Ag(PPh3):]NO3 (4) can be obtained in excellent yield by t he reaction of [(AMTTO)(2)Ag]NO3 (3) with triphenylphosphane in methanol/ac etone. Both complexes were characterized by infrared spectroscopy, elementa l analyses as well as by X-ray diffraction studies. Crystal data for 2 at - 80 degreesC: space group P (1) over bar with a = 1233.8(1), b = 1389.7(1), c = 1417.1 (1)pm, alpha = 89.36(1)degrees; beta = 65.10(1)degrees, gamma = 65.95(1)degrees: Z = 2, R-1 = 0.0582 and for 4 at -80 degreesC: space group P (1) over bar, with a = 1193.3(1), b = 1308.5(1), c = 1385.3(1) pm, a = 9 4.69(1)degrees, beta = 109.14(1)degrees, gamma = 93.42(1)degrees, Z = 2. R- 1 = 0.0716.