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New Complexes of Silicon | ||
| Journal of Education and Science | ||
| Article 5, Volume 17, Issue 3, 2005, Pages 61-67 PDF (0 K) | ||
| DOI: 10.33899/edusj.2005.82513 | ||
| Author | ||
| Manal A.M.Al-Shamma | ||
| Abstract | ||
| Schiff-base ligands (L), prepared from substituted and non-substituted salicylaldehyde and 2-aminopyridine or 2-amino-3-methyl pyridine, and pyrrol-2-carboxylic acid (PGA or X), have been reacted with tetrachlorosilicon in 1:2:1 molar ratio respectively to give complexes of the general formula [Si(L~H)(X~H)2]Cl in neutral medium and [SiEJyCLj in basic medium. The complexes obtained were characterized physicochemically and spectroscopically. The Schiff-base seems to coordinate with silicon atom in a bidentate fashion via the most reactive bonding sites; the central imine (azomethine)-nitrogen and phenolic oxygen atom. (PCA) coordinate with silicon also as a bidentate ligand via pyrrol nitrogen atom and carboxylic oxygen atoms to give complexes with silicon of hexa-coordination number. All the complexes produced showed conductive species, in ethanol indicating the ionic structure [SiLXaJCU in neutral medium and [SiLX2]Cl in basic medium. | ||
| Keywords | ||
| Schiff-base ligands (L); non-substituted salicylaldehyde; silicon atom | ||
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