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Synthesis, characterisation and thermal behaviour of some thiosulfato-and sulfato copper(II) complexes

Antibacterial activity

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Abstract

The investigation concerning the synthesis, spectrochemical and biological properties as well as thermal stability of some tiosulfato-and sulfato copper(II) complexes of type [Cuphen(S2O3)(H2O)n]·mH2O (phen: 1,10-phenanthroline; (1): n=2, m=0; (2): n=2, m=0.5) and respectively [Cuphen(OSO3)(H2O)n] ((3): n=0; (4): n=2) are presented in this paper. The bonding and stereochemistry of the complexes have been characterised by IR and electronic studies. The in vitro qualitative and quantitative assays of the antimicrobial activity of the tested compounds vs. planktonic and adherent Gram negative bacterial strains isolated from different surfaces in the hospital environment demonstrated that all compounds exhibited very good antimicrobial activity vs. Escherichia coli, Klebsiella sp. and Enterobacter sp. with very low M.I.C. values.

The thermal analysis has evidenced the thermal intervals of stability and also the thermodynamics effects that accompany them both in synthetic air and argon. The thermal behaviour is complex according to DTG and DSC curves including dehydration as well as thiosulfate and phenanthroline decomposition.

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Authors and Affiliations

  1. Department of Inorganic Chemistry, University of Bucharest, 90–92 Panduri Str., 050663, Bucharest, Romania

    Rodica Olar, Mihaela Badea & Dana Marinescu

  2. Institute of Physical Chemistry, 202 Splaiul Independentei, Sector 6, Bucharest, Romania

    Oana Carp

  3. Faculty of Biology, Department of Microbiology, University of Bucharest, 1-3 Aleea Portocalelor Str., 060101 Sector 6, Bucharest, Romania

    Veronica Lazar & Carmen Balotescu

  4. Department of Chemistry, ‘Ovidius’ University, 124 Mamaia Str., Constantza, Romania

    Anca Dumbrava

Authors
  1. Rodica Olar
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  2. Mihaela Badea
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  3. Oana Carp
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  4. Dana Marinescu
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  5. Veronica Lazar
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  6. Carmen Balotescu
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  7. Anca Dumbrava
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Correspondence to Rodica Olar.

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Olar, R., Badea, M., Carp, O. et al. Synthesis, characterisation and thermal behaviour of some thiosulfato-and sulfato copper(II) complexes. J Therm Anal Calorim 92, 245–251 (2008). https://doi.org/10.1007/s10973-007-8768-2

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  • DOI: https://doi.org/10.1007/s10973-007-8768-2

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