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  • Chem Sci Trans., 2013, 2(S1),  pp S157-S166  

    DOI:10.7598/cst2013.38

    Research Article

    Antimicrobial Activity, Spectral Studies and Micellar Properties of Some Surfactant-Cobalt(III) Complexes

  • K. SASIKALA and S. ARUNACHALAM
  • Saranathan College of Engineering, Tiruchirappalli-620 012, Tamilnadu, India School of Chemistry, Bharathidasan University, Tiruchirappalli-620 024, Tamilnadu, India
  • Abstract

    Some new surfactant-cobalt(III) complex ions of the type, cis-[Co(X)2(C11H23NH2)2]3+ (where X= ethylenediamine or 2,2’ bipyridyl or 1,10-phenanthroline) and cis-α-Co(trien) (C11H23NH2)2]3+ were synthesized and characterized by IR, NMR, UV-Visible spectra, elemental and metal analysis. The critical micelle concentration (CMC) values of these surfactant-cobalt(III) complexes in aqueous solution were obtained from conductance measurements. Specific conductivity data (at 298, 308 and 318 K) served for the evaluation of temperature-dependent CMC and the thermodynamics of micellization (ΔG0m, ΔH0m, ΔS0m). The surfactant–cobalt(III) complexes were screened for their antibacterial and antifungal activities against various microorganisms. The results were compared with the standard drugs, ciprofloxacin and fluconazole respectively. The surfactant–cobalt(III) complexes showed good antimicrobial activity against gram positive and gram negative bacteria and fungi. Thus our results show that the surfactant–copper(III) complexes can also be considered for antifungal and antibiotic drugs.

    Keywords

    Surfactant-cobalt(III) complex, Antimicrobial activity, Fluconazole, Cifrofloxacin

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