Some benzimidazole amide complexes of ruthenium(II) |
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| Authors: | T Satyanarayana and K Veera Reddy |
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| Institution: | (1) Department of Chemistry, University College of Science, Osmania University, 500 007 Hyderabad, India |
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| Abstract: | The synthesis and characterisation of ruthenium(II) complexes with 2-amidobenzimidazoles are reported. The complexes RuCl2(DMSO)4 and RuCl2(PPh3) react with 2-(acetamido)benzimidazole (AB) and 2-(benzamido)benzimidazole (BB) it acetone to give products of the type Ru(L)2(N−O)2]Cl2 L=DMSO, PPh3, N−O=AB, BB). The displacement reactions are faster in the case of methyl (AB) than phenyl (BB) substituted ligands. The
ligands are bifunctional chelating agents coordinating through the tertiary nitrogen of benzimidazole ring and amide oxygen.
The complexes are characterised based on their elemental analysis, conductivity data, infrared,1H and31P nmr spectra. Acis-geometry is proposed for all the complexes reported. |
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| Keywords: | Ruthenium(II) complexes benzimidazole amides bifunctional ligands 31P and1H nmr amide oxygen coordination |
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