Abstract
The ligand E-3-[((2-hydroxynaphthalen-1-yl)methylene)amino]naphthalen-2-ol (H2L) and its organotin(IV) complexes (Me)2Sn(H2L) (1a), (n-Bu)2Sn(H2L) (1b), (Ph)2Sn(H2L) (1c), (n-Oct)2Sn(H2L) (1d), (Cy)2Sn(H2L) (1e), and (Me3SiCH2)2Sn(H2L) (1f)] have been synthesized in one pot by multicomponent reactions in moderate yields from 2‑hydroxy-1-naphthaldehyde, 3-amino-2-naphthol and the corresponding diorganotin(IV) oxide. The complexes were characterized by common spectroscopic techniques such as FT-IR, UV–vis, mass spectrometry and NMR (1H, 13C and 119Sn) spectroscopy analysis. 119Sn NMR spectra showed signals between δ = - 143 to -323 ppm for all compounds, indicating the pentacoordination of the tin atoms in solution. Single X-ray structure of complex 1a show a distorted octahedral geometry for tin atoms because of the presence of intermolecular Sn•••O interactions. 1D polymeric structures are formed by CH•••O and CH•••π interactions in solid state.
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