Abstract
The thermogravimetry (TG) and derivative thermogravimetry (DTG) have been used to study the thermal decomposition of some oxalyl (H4OxTSC), malonyl (H4MaTSC) and succinyl-bis-4-phenyl- thiosemicarbazide (H4SuTSC) ligands and their metal complexes using Horowitz-Metzger (HM) and Coats-Redfern methods. The kinetic thermodynamic parameters such as: E*, ΔH*, ΔS*and ΔG* are calculated from the DTG curves. The isolated complexes have the general composition [M2(L) (H2O)6], where M=Cu(II), Zn(II), L=MaTSC and M=Co(II), Cu(II) or Sn(II) and L=Su TSC and [M2(L) (H2O)n]·nH2O where M=Cu(II), Co(II) or Sn(II), L=OxTS or Ma TSC. The tested compounds show a good activity against four strains of bacteria Gram negative Escherichia coli, Pseudomonas aeruginosa species and gram-positive Bacillus cereus and Staphylococcus aureus.
Highlights
Thiosemicarbazide and its derivatives have received considerable attention because of their pharamacological *Corresponding author.How to cite this paper: Amin, R.R., El-Reedy, A.A.M., Alansi, T.Y. and Yamany, Y.B. (2016) Spectral, Thermal and Antibacterial Studies for Bivalent Metal Complexes of Oxalyl, Malonyl and Succinyl-bis-4-phenylthiosemicarbazide Ligands
We report here the thermal, spectral and biological evaluations of Co(II), Cu(II), Zn(II) and Sn(II) complexes for 1,1-oxalyl, malonyl and succinyl-bis-4-phenylthiosemicarbazide ligands
The high values of the activation energy illustrated to the thermal stability of the complexes
Summary
(2016) Spectral, Thermal and Antibacterial Studies for Bivalent Metal Complexes of Oxalyl, Malonyl and Succinyl-bis-4-phenylthiosemicarbazide Ligands. Thiosemicarbazide derivatives are of current interest with respect to their uses as analytical reagents for separations of metal(II) ions [4]-[7], analytical determination of metal ions [8] [9], and clinical analysis [10] Most of these compounds have antifungal [11]-[12], antimicrobial [13] and antitumor activity [14]-[16], as well as radiopharmaceuticals applications [17]. We report here the thermal, spectral and biological evaluations of Co(II), Cu(II), Zn(II) and Sn(II) complexes for 1,1-oxalyl, malonyl and succinyl-bis-4-phenylthiosemicarbazide ligands. The thermal decomposition is used to infer the structure of the metal complexes and to calculate the different thermodynamic activation parameters
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
