Crystal structure of bis((pyridyl)ammo-iodobenzeno)disulfatodicopper(II) methanol disolvate, O^CieHiilNaMSO^ · 2CH3OH

C34H32C112I2N6O10S2, monoclinic, P\2\!c\ (no. 14), a = 8.028(3) A, b = 12.957(3) A, c = 18.236(4) A, β = 95.54(4)°, V= 1888.0 A, Z = 2, R&(F) = 0.040, wRKf(F) = 0.041, T= 295 K. Source of material Die ligand l-iodo-4-(bis(2-pyridyl)amino)benzene (Ibdpam) was synthesized according to the standard Ullmann procedure (cf. (1)). The title complex was obtained by stirring a slight excess of Ibdpam (0.447 g, 1.2 mmol) with 0.244 g (1 mmol) of C11SO4 · 5 H20 in a 20 mL ethanol-water solution (1:1, v/v) for twenty four hours. The final blue-green solution was distilled to dryness, forming a blue precipitate. This was washed several times with chloroform and ether to remove the excess of the ligand and finally recrystallized from methanol (yield 89 % with respect to G1SO4 · 5H2O). Crys- tals of the title compound were obtained after recrystallization and slow evaporation in methanol-water solution at ambient tem- perature. They were air and X-ray stable.