Thermal
behaviour of new N,N-dimethylbiguanide complexes having selective and effective
antibacterial activity |
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Authors: | Rodica Olar Michaela Badea E Cristurean C Parnau D Marinescu |
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Institution: | (1) Faculty of Chemistry, Department of Inorganic Chemistry, University of Bucharest, Bucharest, Romania, 050663 Sector 5, 90-92 Panduri Street |
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Abstract: | The complexes of the type M(HDMBG)2(CH3COO)2·nH2O ((1)
M:Mn, n=1.5; (2)
M:Ni, n=0; (3)
M:Cu, n=2; (4)
M:Zn, n=2; DMBG: N,N-dimethylbiguanide)
present in vitro antimicrobial activity. 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 the complexes. The thermal transformations are complex
processes according to TG and DTG curves including dehydration, oxidative
condensation of –C=N– units as well as thermolysis processes.
The final products of decomposition are the most stable metal oxides. |
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Keywords: | complexes N N-dimethylbiguanide paracyanide thermal behaviour |
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