Synthesis, Characterization and DFT Study of Bioactive 2-(2-Methylpropanoyl)aminopropanoic Acid and Its Polymeric Tributyltin(IV) Derivative

摘要

abstract_textpTributyltin(IV) derivative (1) was synthesized by reacting the ligand (A(1)) {2-(2-methylpropanoyl)aminopropanoic acid} with tributyltin(IV)chloride in presence of potassium hydroxide. The compounds were characterized by elemental analysis, FTIR and multinuclear (H-1, C-13 and Sn-119) NMR spectroscopy. The Sn-119 NMR data for (1) suggest that tin is five coordinated having trigonal bipyramidal molecular geometry. Molecular structures for (1) and (A(1)) were determined by single crystal X-ray analysis. Some new and novel structural features of the compounds, are reported first time. Tributyltin(IV) complex has distorted trigonal bipyramidal molecular geometry around tin in the solid state exhibiting single chain tetramer which may be ascribed as tetra-nuclear cage structure that is constructed from four tributyltin units and four ligand moieties. The tributyltin(IV) entities are bridged by one oxygen of the carboxylic group of one ligand and another oxygen of the amidic carbonyl of next ligand. The nature of Sn horizontal ellipsis O bond was analyzed with the help of natural bond orbital (NBO) analysis. The compounds were also screened in vitro for their anti-microbial and urease inhibition activities, and found some encouraging results./p/abstract_text