Synthèse, caractérisation et stabilité thermique de nouveaux composés hybrides à base d’étain et de dérivés de pyridine.

Abstract

This work was devoted to the synthesis of new hybrid materials formed from hexachloride and difluoruretetrachloride of tin and organic pyridine matrices. The structural study and the physico-chemical characterisation of these compounds were carried out using several techniques such as: proton nuclear magnetic resonance (NMR), Raman and Infrared spectroscopy, X-ray diffraction and differential and gravimetric thermal analysis. Two synthesis methods were used: -Hydrothermal synthesis.- Aqueous synthesis.These investigations on this type of hybrid compounds led to the preparation of several new tin-based phases with different organic matrices:- five pyridine-based products (4-amidopyridin, 3,5-Dichloro-2(1H) pyridinone,4-carboxypyridine, 2-aminopyridin-3-ol and 2-aminopyridin).-Two products based on bipyridine.- A product based on terpyridine (4-chloro-2,6-di (pyridin-3-yl)pyridine). The main purpose of this work is to carry out systematic investigations on new organic-inorganic hybrid compounds in order to prepare new products with interesting properties associated with the mineral and organic parts.