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Binuclear Ru(III) Schiff base complexes: synthesis, spectral characterization, oxidation, CC coupling reactions and antibacterial activities
Author(s) -
Manimaran Arumugam,
Jayabalakrishnan Chinnasamy
Publication year - 2010
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.1560
Subject(s) - chemistry , schiff base , ruthenium , antibacterial activity , catalysis , medicinal chemistry , elemental analysis , proton nmr , coupling reaction , base (topology) , polymer chemistry , nuclear chemistry , inorganic chemistry , stereochemistry , organic chemistry , bacteria , mathematical analysis , mathematics , biology , genetics
New hexa‐coordinated binuclear Ru(III) Schiff base complexes of the type {[(B) 2 X 2 Ru] 2 L} (where B = PPh 3 or AsPh 3 ; X = Cl or Br; L = binucleating N 2 O 2 Schiff bases) were synthesized and characterized by elemental analysis, magnetic susceptibility measurement, FT‐IR, UV–vis, 13 C{ 1 H}‐NMR, ESR at 300 and 77 K, cyclic voltammetric technique, powder X‐ray diffraction pattern and SEM. The new complexes were used as catalysts in phenyl–phenyl coupling reaction and the oxidation of alcohols to their corresponding carbonyl compounds using molecular oxygen atmosphere at room temperature. Further, the new Schiff base ligands and their Ru(III) complexes were also screened for their antibacterial activity against K. pneumoniae, Shigella sp., M. luteus , E. coli and S. typhi . From this study, it was found that the activity of the ruthenium(III) Schiff base complexes almost reaches the effectiveness of the conventional bacteriocide standards. Copyright © 2009 John Wiley & Sons, Ltd.