Journal of Thermal Analysis and Calorimetry

, Volume 115, Issue 3, pp 2447–2455 | Cite as

Synthesis and characterisation of Ni(II), Cu(II), and Zn(II) complexes with an acyclic Mannich base functionalised with thioglycolate moiety

  • Anca Dumbravă
  • Rodica Olar
  • Mihaela Badea
  • Maria Nicoleta Grecu
  • Florentina Pătrascu
  • Luminita Măruţescu
  • Nicolae Stănică


New complexes ML(CNS)·nH2O [M = Ni, n = 0.5; M = Cu, n = 4.5; M = Zn, n = 0.5, HL: 6-mercapto-(1,4,8,11-tetraazaundecanyl)-6-carboxylic acid)] have been synthesised, chemical analysed, and characterised by different spectroscopic techniques (IR, UV–Vis–NIR, 1H NMR, EPR, ESI–MS), and magnetic measurements. Based on the IR spectra a dinuclear structure with the 1,3-CSN coordination was proposed for Ni(II) and Cu(II) complexes. The dinuclear structure of Cu(II) complex is also consistent with both magnetic behaviour and EPR spectrum. According to TG, DTG and DTA curves the thermal transformations are complex processes, including dehydration, Mannich base oxidative degradation and thiocyanate decomposition. The final product of decomposition is the most stable metallic oxide, as XRD data indicates. The new complexes were also screened for their microbicidal and antibiofilm properties.


Tetraazaundecane derivative Complex Thioglycolic acid One-pot synthesis Thermal stability Antibacterial activity 



Support of the EU (ERDF) and Romanian Government, that allowed the acquisition of the research infrastructure under POS-CCE O 2.2.1 project INFRANANOCHEM—Nr. 19/01.03.2009, is gratefully acknowledged.


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2013

Authors and Affiliations

  • Anca Dumbravă
    • 1
  • Rodica Olar
    • 2
  • Mihaela Badea
    • 2
  • Maria Nicoleta Grecu
    • 3
  • Florentina Pătrascu
    • 2
  • Luminita Măruţescu
    • 4
  • Nicolae Stănică
    • 5
  1. 1.Department of Chemistry and Chemical EngineeringOvidius UniversityConstantaRomania
  2. 2.Department of Inorganic Chemistry, Faculty of ChemistryUniversity of BucharestBucharestRomania
  3. 3.National Institute of Materials Physics Bucharest-MagureleMagurele-IlfovRomania
  4. 4.Department of Microbiology, Faculty of BiologyUniversity of BucharestBucharestRomania
  5. 5.“Ilie Murgulescu” Physical Chemistry InstituteRomanian AcademyBucharestRomania

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