Abstract
AbstractTin(IV) complexes of the series of dianionic terdentate Schiff bases N‐[(2‐pyrroyl)methylidene]‐N′‐tosylbenzene‐1,2‐diamine, (H2L1), N‐[(2‐hydroxyphenyl)methylidene]‐N′‐tosylbenzene‐1,2‐diamine (H2L2) and some R substituted 2‐{[(2‐hydroxyphenyl)imino]methyl}phenols [R = H (H2L3), 4,6‐(OCH3)2 (H2L4), 3‐(OC2H5) (H2L5) and 3,5‐Br2 (H2L6)] have been synthesized. The compounds were obtained by the electrochemical oxidation of a tin anode in a cell containing an acetonitrile solution of the corresponding ligand. The complex [SnL12] was also obtained by reaction of SnCl2·2H2O and H2L1 in methanol in the presence of triethylamine. The crystal structure of the ligand [H2L6] and the complexes [SnL12] (1), [SnL22] (2), [SnL32] (3) and [SnL62] (6) were determined by X‐ray diffraction. In the complexes, the tin atom is in an octahedral environment coordinated by two dianionic terdentate ligands. Spectroscopic data for the complexes (IR, 1H and 119Sn NMR and mass spectra) are discussed and related to structural information.
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