Syntheses and characterization of triorganotin(IV) complexes of Schiff base derive from 4-amino-5-phenyl-4H-1,2,4-triazole-3-thiol and 5-amino-1,3,4-thiadiazole-2-thiol with p-phthalaldehyde

Eight triorganotin complexes of the types [(R3Sn)(2)(C24H16N8S2)](center dot)Y (R = Ph, Y = 0 (1); R = PhCH2, Y = 2CH(3)OH (2); R = n-Bu, Y = 0 (3)), [(R3Sn)(2)(C24H16N8S2)](n) (R = Me (4)), [(R3Sn)(2)(C12H6N6S4)] center dot Y (R = Ph, Y = CH2Cl2 (5); R = PhCH2, Y = 0 (6)) and [(R3Sn)(2)(C12H6N6S4)] (R = Bu (7), R = Me (8)) have been obtained by H2L1 (H2L1 derived from 4-amino-5-phenyl-4H-1,2,4-triazole-3-thiol) and H2L2 (H2L2 derived from 5-amino-1,3,4-thiadiazole-2-thiol) with triorganotin chloride in the presence of sodium ethoxide. All the complexes were characterized by elemental, IR and NMR spectra analyses, except for complexes 1, 3, 6 and 8, other complexes were also characterized by X-ray diffraction analyses, which reveal that complexes 2 and 5 are dinuclear structures, complex 4 has a 2D network structure and complex 7 forms a macrocyclic structure linked by intermolecular N -> Sn interactions. (C) 2008 Elsevier B.V. All rights reserved.