1,2-Bis-[(5-methyl/chloro/nitro)-2-1H-benzimidazolyl]-1,2-ethanediols and their PdCl2 complexes |
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Authors: | Ülküseven Bahri Tavman Aydın |
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Institution: | (1) Department of Chemistry, Istanbul University, 34850 Avcilar, Istanbul, Turkey |
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Abstract: | 1,2-Bis-(5-methyl)-2-1H-benzimidazolyl]- (L
1), 1,2-bis-(5-chloro)-2-1H-benzimidazolyl]- (L
2), 1,2-bis-(5-nitro)-2-1H-benzimidazolyl]-1,2-ethanediol (L
3) and their PdCl2 complexes were synthesized and characterized by elemental analysis, molar conductivity, i.r. and 1H-n.m.r. spectra. The benzene ring substituents lead to a decrease in melting point. The methyl group reduces the solubility and the acidity of L
1 and Pd(L
1)Cl2, whereas the Cl and NO2 groups increase the solubility and the acidity of L
2, L
3, Pd(L
2)Cl2 and Pd(L
3)Cl2. In Pd(L
1)Cl2 and Pd(L
2)Cl2 complexes, the ligands act as a bidentate through two nitrogen atoms. In Pd(L
3)Cl2, ligand coordination occurs through one OH group oxygen atom and one of the benzimidazole nitrogen atoms. |
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Keywords: | |
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