Synthesis and characterization of new organotin(IV) complexes with polyfunctional ligands |
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Authors: | Maura Pellei Giancarlo Gioia Lobbia Riccardo Spagna |
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Institution: | a Dipartimento di Scienze Chimiche, Università di Camerino, via S. Agostino 1, 62032 Camerino, Macerata, Italy b Istituto di Cristallografia, CNR, Sezione di Monterotondo, C.P. No. 10, 00016 Monterotondo Stazione, Roma, Italy |
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Abstract: | New mono-, di- and tri-organotin(IV) derivatives containing the neutral bis(2-pyridylthio)methane ligand, (pyS)2CH2] and tris(2-pyridylthio)methane ligand, (pyS)3CH] have been synthesized from reaction with SnRnCl4−n (R = Me, nBu, Ph and Cy, n = 1-3) acceptors. Mono-nuclear adducts of the type {(pyS)2CH2]RnSnCl4−n} and {(pyS)3CH]RnSnCl4−n} have been obtained and characterized by elemental analyses, FT-IR, ESI-MS, multinuclear (1H and 119Sn) NMR spectral data. The 1H and 119Sn NMR and ESI-MS data suggest for the triorganotin(IV) derivatives a complete dissociation of the compounds in solution. The mono- and di-organotin(IV) derivatives show a greater stability in solution, and their spectroscopic data are in accordance with the existence of six-coordinated RSnCl3N2 or R2SnCl2N2 species. |
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Keywords: | Organotin(IV) Bis(2-pyridylthio)methane Tris(2-pyridylthio)methane 2-Mercaptopyridine Tin-119 NMR Electrospray ionization mass spectroscopy |
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