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  • 1 University of Bucharest, Faculty of Chemistry, Department of Inorganic Chemistry 90-92 Panduri Str., 050663 Sector 5, Bucharest, Romania
  • | 2 University of Bucharest, Faculty of Chemistry, Department of Inorganic Chemistry 90-92 Panduri Str., 050663 Sector 5, Bucharest, Romania
  • | 3 University of Bucharest, Faculty of Chemistry, Department of Inorganic Chemistry 90-92 Panduri Str., 050663 Sector 5, Bucharest, Romania
  • | 4 University of Bucharest, Faculty of Biology, Department of Microbiology 1-3 Aleea Portocalilor Str., 060101 Sector 6, Bucharest, Romania
  • | 5 University of Bucharest, Faculty of Biology, Department of Microbiology 1-3 Aleea Portocalilor Str., 060101 Sector 6, Bucharest, Romania
  • | 6 University of Bucharest, Faculty of Biology, Department of Microbiology 1-3 Aleea Portocalilor Str., 060101 Sector 6, Bucharest, Romania
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Summary The complexes of the type [M(HDMBG)Cl3] ((1) M:Co; (2) M:Zn;) and [M(DMBG)Cl2] ((3) M:Pd; (4) M:Pt; DMBG: N,N-dimethylbiguanide) present in vitro antimicrobial activity. The modification evidenced in IR and 1H NMR spectra (in the case of complex (2)) was correlated with the presence of N,N-dimethylbiguanide ion as unidentate, coordinated through N3 and of N,N-dimethylbiguanide as chelate, coordinated through N1 and N4 respectively. The electronic reflectance spectrum showed the d-d transition for complex (1) characteristic for the tetrahedral surrounding while the spectra for complexes (3) and (4) have the characteristic pattern for square-planar stereochemistry. The cyclic voltammetric data show the characteristic waves for mononuclear complexes of the metallic ions presented below. The thermal analysis has evidenced the thermal intervals of stability and also the thermodynamics effects that accompany them. The different nature of the ligands generates a different thermal behaviour for complexes.

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  • Impact Factor (2019): 2.731
  • Scimago Journal Rank (2019): 0.415
  • SJR Hirsch-Index (2019): 87
  • SJR Quartile Score (2019): Q3 Condensed Matter Physics
  • SJR Quartile Score (2019): Q3 Physical and Theoretical Chemistry
  • Impact Factor (2018): 2.471
  • Scimago Journal Rank (2018): 0.634
  • SJR Hirsch-Index (2018): 78
  • SJR Quartile Score (2018): Q2 Condensed Matter Physics
  • SJR Quartile Score (2018): Q2 Physical and Theoretical Chemistry

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
4
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)