Syntheses and crystal structures of di- and triorganotin(IV) derivatives with 2,4,5-trifluoro-3-methoxybenzoic acid

Eight new organotin(IV) complexes with 2,4,5-trifluoro-3-methoxybenzoic acid RnSn(O2CC6HF3OCH3)4−n (n = 3: R = Ph (1), PhCH2 (2), Me (3), n-Bu (4); n = 2: R = Ph (5), PhCH2 (6), Me (7), n-Bu (8)) have been synthesized. All complexes were characterized by elemental, IR, 1H and 13C NMR spectra analyses, and the structures of complexes 1, 3, 7 and 8 were also determined by X-ray crystallography. The geometries at the tin atoms of 1 and 3 are five-coordinated and those of complexes 7 and 8 are six-coordinated. The structures of complexes 1, 3, 7 and 8 have been found to consist of 1D chains built up by intermolecular C–H⋯F weak hydrogen bonding. Intermolecular C–F⋯F weak non-hydrogen interactions in the crystal lattice of 3 link the molecules into a 2D network.

Graphical abstractEight new organotin(IV) complexes with 2,4,5-trifluoro-3-methoxybenzoic acid RnSn(O2CC6HF3OCH3)4−n (n = 3: R = Ph (1), PhCH2 (2), Me (3), n-Bu (4); n = 2: R = Ph (5), PhCH2 (6), Me (7), n-Bu (8)) have been synthesized. All complexes were characterized by elemental, IR, 1H and 13C NMR spectra analyses, and the structures of complexes 1, 3, 7 and 8 were also determined by X-ray crystallography. The geometries at the tin atoms of 1 and 3 are five-coordinated and those of complexes 7 and 8 are six-coordinated. The structures of complexes 1, 3, 7 and 8 have been found to consist of 1D chains built up by intermolecular C–H⋯F weak hydrogen bonding. Intermolecular C–F⋯F weak non-hydrogen interactions in the crystal lattice of 3 link the molecules into a 2D network.Figure optionsDownload full-size imageDownload as PowerPoint slide