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Synthesis, spectroscopic characterization and catalytic oxidation properties of ONO/ONS donor Schiff base ruthenium(III) complexes containing PPh3/AsPh3

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Abstract

Six different ruthenium(III) complexes of Schiff bases derived from 2-hydroxy-1-naphthaldehyde and o-aminophenol/o-aminothiophenol have been synthesized. The compounds with the general formula [RuX(EPh3)2(L)] (X = Cl or Br; E = P or As; L = bifunctional tridentate ONO/ONS donor Schiff base ligand) were characterized by infrared, electronic, electron paramagnetic resonance spectroscopy and elemental analyses. Spectroscopic investigation reveals coordination of Schiff base ligand through ONO/ONS donor atoms and octahedral geometry around ruthenium metal. Redox property of complexes has been examined by using cyclic voltammetry. The catalytic oxidation property of ruthenium(III) complexes were also investigated.

Mononuclear Ru(III) complexes of the type [RuX(EPh3)2(L)] (X = Cl or Br; E = P or As; L = bifunctional tridentate Schiff base ligand) were prepared and characterized by UV-Vis, IR and EPR spectroscopy. Electrochemical behaviour of the complexes has been examined. The complexes act as catalysts for the oxidation of alcohols to carbonyl compounds in the presence of N-methylmorpholine-N-oxide.

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Authors and Affiliations

  1. School of Chemistry, Bharathiar University, Coimbatore, 641 046, India

    S PRIYAREGA, R PRABHAKARAN & K NATARAJAN

  2. Department of Chemistry, National Institute of Technology, Tiruchirappalli, 620 015, India

    M MUTHU TAMIZH & R KARVEMBU

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  1. S PRIYAREGA
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  2. M MUTHU TAMIZH
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  3. R KARVEMBU
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  4. R PRABHAKARAN
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Correspondence to K NATARAJAN.

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PRIYAREGA, S., TAMIZH, M.M., KARVEMBU, R. et al. Synthesis, spectroscopic characterization and catalytic oxidation properties of ONO/ONS donor Schiff base ruthenium(III) complexes containing PPh3/AsPh3 . J Chem Sci 123, 319–325 (2011). https://doi.org/10.1007/s12039-011-0087-2

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