Synthesis and Structural Characterization of Triorganotin(IV) Derivatives with 2,2′-Thiodiglycolic Acid and 3,3′-Thiodipropionic Acid

The synthesis and structural characterization of four novel triorganotin(IV) complexes, {(R 3 Sn) 2 [C 2 H 4 S(COO) 2 ]} n (R = Me: 1 ), {(R 3 Sn) 4 [C 2 H 4 S(COO) 2 ] 2 } n (R = n Bu: 2 ), {(R 3 Sn) 2 [C 4 H 8 S(COO) 2 ]} n (R = Me: 3 ; n Bu: 4 ) were obtained by the reaction of 2,2′-thiodiglycolic acid, 3,3′-thiodipropionic acid and the corresponding R 3 SnCl (R = Me, n Bu) with potassium hydroxide in methanol. All the complexes were characterized by elemental analysis, Fourier transform infrared and nuclear magnetic resonance ( 1 H, 13 C, 119 Sn) spectroscopies, X-ray crystallography and thermogravimetric analyses. The crystal structures show that 1 has 2D network structure in which 2,2′-thiodiglycolic acid acts as a tetradentate ligand coordinating to the trimethyltin(IV) ions. Complexes 2 , 3 , and 4 are 3D metal-organic framework structures in which the deprotoned acids act as a tetradentate ligand afforded by four oxygen atoms.