Abstract
Four organotin(IV) complexes based on 2-(trifluoromethyl)benzeneseleninic acid, [Me3Sn(O2SeC6H4-2-CF3)]4 (1), [Ph3Sn(O2SeC6H4-2-CF3)]n (2), [R2Sn(O2SeC6H4-2-CF3)2]n (R = Me 3; n-Bu 4), have been synthesized and characterized by X-ray diffraction, elemental analysis, infrared spectroscopy, and NMR (1H, 13C and 119Sn) spectroscopy. Single-crystal X-ray analyses show that 1 has a centrosymmetric tetranuclear triorganotin selenite with a tetranuclear 16-membered macrocycle formed by trimethyltin and ligand alternately linking; 2 exhibits a 1-D neutral infinite chain structure in which the [O2SeC6H4-2-CF3]− is a μ2-bridging ligand; 3 and 4 are polymeric chain structures containing Sn2O4Se2 eight-membered rings where the areneseleninate groups are double bridges between the tin ions. Examination of the intermolecular contacts of 1 reveals the existence of the C–H⋯O hydrogen bonding interactions and C–H⋯π interactions. Weak C–H⋯O interactions were also found to be important for the formation of the 3-D structure for 3.
Published Version
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