C. Sivaraj

University of Madras, Chennai, State of Tamil Nadu, India

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Publications (5)4.52 Total impact

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    ABSTRACT: A new series of acyclic mononuclear copper(II) complexes have been prepared by Schiff-base condensation derived from 5-methylsalicylaldehyde, diethylenetriamine, tris(2-aminoethyl) amine, triethylenetetramine, N,N-bis(3-aminopropyl)ethylene diamine, N,N-bis(aminopropyl) piperazine, and copper perchlorate. All the complexes were characterized by elemental and spectral analyses. Electronic spectra of the complexes show a d–d transition in the range 500–800 nm, electrochemical studies of the complexes show irreversible one-electron-reduction process around −1.10 to −1.60 V. The reduction potential of the mononuclear copper(II) complexes shifts toward anodic direction upon increasing the chain length of the imine compartment. ESR spectra of the mononuclear copper(II) complexes show four lines, characteristic of square-planar geometry, with nuclear hyperfine spin 3/2. The copper(II) complexes show a normal room temperature magnetic moment value μ eff = 1.72–1.76 BM, close to the spin-only value of 1.73 BM. Electrochemical and catalytic studies of the complexes were compared on the basis of increasing the chain length of the imine compartment. All the complexes were screened for antifungal and antibacterial activities.
    Journal of Coordination Chemistry 02/2011; 64(4):637-650. · 1.80 Impact Factor
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    ABSTRACT: BF(3).Et(2)O-catalysed O-glycosylation of 1,2,3-tri-O-acetyl-4,6-O-butylidene- and ethylidene-beta-d-glucopyranose with different aliphatic and aromatic alcohols proceeds for the most part with complete retention of anomeric configuration. Antioxidant activity of O-glycosides shows significant inhibition (IC(50) approximately 77%). 1,3-Dipolar cycloaddition of terminal alkyne derivatives of O-glycosides with glycosyl azide results in disaccharides.
    Carbohydrate research 08/2010; 345(12):1649-57. · 2.03 Impact Factor
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    ABSTRACT: In the title compound, C6H12O5, the cyclohexane ring adopts a chair conformation. The absolute configuration is not defined. However, the relative configuration can be assigned as 1R*,3R*,4S*,S*. In the crystal structure, molecules are linked by strong intermolecular O—H...O hydrogen bonds, producing a three-dimensional network.
    Acta Crystallographica Section E Structure Reports Online 01/2009; · 0.35 Impact Factor
  • Acta Crystallographica Section E-structure Reports Online - ACTA CRYSTALLOGR E-STRUCT REP. 01/2009; 65(5).
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    ABSTRACT: In the title compound, C(6)H(12)O(5), the cyclo-hexane ring adopts a chair conformation. The absolute configuration is not defined. However, the relative configuration can be assigned as 1R*,3R*,4S*,S*. In the crystal structure, mol-ecules are linked by strong inter-molecular O-H⋯O hydrogen bonds, producing a three-dimensional network.
    Acta Crystallographica Section E Structure Reports Online 01/2009; 65(Pt 5):o1114. · 0.35 Impact Factor