Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 1

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Synthesis, Characterization and Biological Evaluation of 4-Methyl-7-(salicylidineamino)coumarin Metal(II) Complexes

El-Husseiny A. F.

Polish Journal of Chemistry

2009

Vol. 83, nr 10

1745-1755

Four transition M(II) complexes [where M = Cu(II), Zn(II), Cd(II) and Pd(II)] of the organic ligand, 4-methyl-7-(salicylidineamino)coumarin, HL, have been synthesized and characterized by a variety of physicochemical techniques. An octahedral structure is proposed for Cd(II) complex, a tetrahedral structure for the Zn(II) complex while square planar for Pd(II) complex. Thermal decomposition study of the ligand and its metal complexes was monitored by TG and DTG analyses under N2 atmosphere. The decomposition course and steps were analyzed and the activation parameters of the nonisothermal de composition are determined. The negative values of Delta S* indicated the ordered structures of the prepared complexes compared to their starting reactants. The ligand HL and its metal complexes exhibited good antibacterial activities against Escherichia coli and Bacillus subtilis species.