Conclusion

Dans ce chapitre, la synthèse de la 3H-1,2-benzodithiole-3-thione a été réalisée avec un rendement de 80%. La caractérisation a été assurée par les méthodes spectroscopiques (RMN, IR), et deux différents polymorphes ont été cristallisés et étudiés par les rayons X. Aussi, la réaction de la 3H-1,2-benzodithiole-3-thione avec l’acide aurique a conduit à une condensation bimoléculaire et a produit la molécule diethyl 2,2'-trisulfanediyldibenzoate.

L’étude de quelques complexes organométalliques, préparés à base de 3H-1,2-benzodithiole-3-thione comme ligand, a résulté des valeurs caractéristiques qui ont subi un décalage après la coordination avec un métal.

On a mentionné l’exemple de la vibration de la liaison C═S qui passe de la valeur 1014 cm-1

chez le ligand libre à la valeur 1004.8 cm^-1 chez le complexe avec SnCl4.

La comparaison entre le ligand libre et ses complexes du fer carbonyle résulte que la complexation conduit à l’ouverture du cycle à cinq et à la transformation de la liaison thiocarbonyl (C═S) à une liaison simple.

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