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)].Y (R = Ph, Y = 0 (1); R = PhCH2, Y = 2CH3OH (2); R = n-Bu, Y = 0 (3)), [(R3Sn)2(C24H16N8S2)]n (R = Me (4)), [(R3Sn)2(C12H6N6S4)] · 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.

Graphical abstractEight triorganotin Schiff base complexes have been obtained by H2L1 and H2L2 with triorganotin chloride. All the complexes were characterized by elemental, IR, NMR spectra analyses and part of them were also characterized by X-ray diffraction analyses.Figure optionsDownload full-size imageDownload as PowerPoint slide