Derivatization of 3-aminopropylsilatrane to introduce azomethine linkage in the axial chain: Synthesis, characterization and structural studies

Some new silatranes containing an azomethine group as coordinating system in the axial chain are reported. This system is introduced into the chain by the treatment of 3-aminopropylsilatrane with different carbonyl compounds like acetylacetone (1), 2-acetylphenol (2), paeonol (3) and salicylaldehyde (4) in the presence of anhydrous sodium sulphate. All the compounds were characterized by elemental analysis, spectroscopic techniques and X-ray diffraction analysis. The thermal stability of all silatranes was studied by TGA/DTG/DSC techniques, which is in agreement with the Mass spectrometry and X-ray diffraction studies.