The Syntheses, Characterization, Structure And Property Studies Of The Research On The Performance Of The Organotin Compound

Organotin compounds have attracted considerable attention by the chemists and their co-workers due to their wide applications for example as pesticidal, bactericidal and antitumour agents in many fields such as industry, agriculture and medicine. It possesses important scientific meaning to synthesize new organotin compounds and study their structures and properties. In this paper, we have synthesized several organotin complexes by the reaction of different ligand and di-n-butyltin oxide or dibenzyldichlorostannane according to the related literature. Each complex was characterized by elemental analysis, 1H NMR, FT-IR spectroscopies. The molecular structure of each complex was determined by single crystal X-Ray diffraction analysis. The antibacterial and antitumour activities of these complexes were preliminary studied. The novel and creative conclusions of this paper may be include:1. Two novel large ringy organotin carboxylate compounds, [(Bu₂Sn)₂OL]₂·2C₆H₆ (3) and [(Bu₂Sn)₂OL]₂·DMF (4),have been synthesized by the reaction of two flexible dicarboxylic acids((1) and (2)). The X-ray determination show that complexes (3) and (4) are both centrosymmetric dimmer and features a central rhombus Bu₄Sn₂O₂ unit with two exo-cyclic and endo-cyclic Sn atoms be linked by the O atoms of the bidentate carboxylato ligand. The novel large ring structures are divided into two big rings by the central rhombus unit.2. A novel di-n-butyltin carboxylate compound (5) has been synthesized by the dehydration reaction between the di-n-butyltin oxide and acetic acid. The complex (5) is a centrosymmetric dimmer and features a central rhombus Sn₂O₂ unit which involve several bibridge hydroxyl groups, resulting in a ladder type structure motif. Four Sn atoms are divided into two different types. Two of them are exo-cyclic Sn atoms and the other two are endo-cyclic Sn atoms. All Sn atoms are five-coordinated and present the least distorted trigonal bipyramidal geometry structures. Dimentional structure is formed through significant intermolecular hydrogen-bonding interaction in complex.3. The new dibenzyltin complex (6) was synthesized by the hydrolysis of dibenzyltin dichloride[(PhCH₂)₂SnCl₂] under the effect of pH by sodium hydroxide. Complex (6) is a centrosymmetric ladder dimmer structure which involves two bibridge hydroxyl groups. Four Sn atoms are five-coordinated and present the least distorted trigonal bipyramidal geometry structures.4. The new dibenzyltin carboxylate compound (7) was synthesized by the reaction of 4-aminobenzoic acid and dibenzyltin dichloride. Four Sn atoms are five-coordinated and present the least distorted trigonal bipyramidal geometry structures.