کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1233521 968811 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Bivalent transition metal complexes of o-hydroxyacetophenone [N-(3-hydroxy-2-naphthoyl)] hydrazone: Spectroscopic, antibacterial, antifungal activity and thermogravimetric studies
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Bivalent transition metal complexes of o-hydroxyacetophenone [N-(3-hydroxy-2-naphthoyl)] hydrazone: Spectroscopic, antibacterial, antifungal activity and thermogravimetric studies
چکیده انگلیسی

Schiff base complexes of Cu(II), Ni(II) and Zn(II) with the o-hydroxyacetophenone [N-(3-hydroxy-2-naphthoyl)] hydrazone (H2o-HAHNH) containing N and O donor sites have been synthesized. Both ligand and its metal complexes were characterized by different physicochemical methods, elemental analysis, molar conductivity (1H NMR, 13C NMR, IR, UV–visible, ESR, MS spectra) and also thermal analysis (TG and DTG) techniques. The discussion of the outcome data of the prepared complexes indicates that the ligand behave as a bidentate and/or tridentate ligand. The electronic spectra of the complexes as well as their magnetic moments suggest octahedral geometries for all isolated complexes. The room temperature solid state ESR spectrum of the Cu(II) complex shows dx2−y2 as a ground state, suggesting tetragonally distorted octahedral geometry around Cu(II) centre. The molar conductance measurements proved that the complexes are non-electrolytes. The kinetic thermodynamic parameters such as: E#, ΔH#, ΔG#, ΔS# are calculated from the DTG curves, for the [Ni(HO-HAHNH)2] and [Zn(H2O-HAHNH)(OAc)2]·H2O complexes using the Coats–Redfern equation. Also, the antimicrobial properties of all compounds were studied using a wide spectrum of bacterial and fungal strains. The [Cu(Ho-HAHNH)(OAc)(H2O)2] complex was the most active against all strains, including Aspergillus sp., Stemphylium sp. and Trichoderma sp. Fungi; E. coli and Clostridium sp. Bacteria.

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► Cu(II), Ni(II) and Zn(II) with o-hydroxyacetophenone [N-(3-hydroxy-2-naphthoyl)] hydrazone were prepared.
► They were characterized by different physicochemical methods, elemental analysis, molar conductivity (1H NMR, 13C NMR, IR, UV–visible, ESR, MS spectra).
► The kinetic thermodynamic parameters such as: E#, ΔH#, ΔG#, ΔS# were calculated.
► The antimicrobial properties of all compounds were studied using a wide spectrum of bacterial and fungal.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 81, Issue 1, 15 October 2011, Pages 28–34
نویسندگان
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