Investigation of organotin (IV) thiosemicarbazones precursors for synthesizing nanoscaled tin sulfide materials

A sequence of organotin (IV) thiosemicarbazone addition of the type of R_nSnCl_4-n.mLH (1–14) were formed by the reactions of R₂SnCl₂ with ligands (LH), carvone thiosemicarbazone, C₁₁H₁₇N₃S and carvone ethylthiosemicarbazone, C₁₃H₂₁N₃S in anhydrous ethanol [where R = CH₃, C₄H₉ or C₆H₅; n = 2–3 and m = 1–2]. Characterization of all the compounds is done by FT-IR (Fourier-Transform Infrared Spectroscopy), ¹H, ¹³C, ¹¹⁹Sn NMR (Nuclear Magnetic Resonance) and FAB (Fast Atom Bombardment) mass studies. In the solution state, ¹¹⁹Sn NMR investigations indicate a monodentate method of ligand attachment with the core tin atom through the sulphur atom. TGA(Thermogravimetric Analysis) of (C₄H₉)₂SnCl₂.2C₁₁H₁₇N₃S and (C₆H₅)₂SnCl₂.2C₁₃H₂₁N₃S depicts big thermal events. Transformations of (C₄H₉)₂SnCl₂.2C₁₁H₁₇N₃S and (C₆H₅)₂SnCl₂.2C₁₃H₂₁N₃S to pure tin sulfide (SnS(i) and SnS(ii), correspondingly have been done using solvothermal technique. Images of SEM for (i) and (ii) represents plate-like morphologies of the crystallites and powder XRD(X-Ray Diffraction) of generated tin sulfides suggested formation of orthorhombic structure.