کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1406253 1501845 2010 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Transition metal complexes of Vanillin-4N-(2-pyridyl) thiosemicarbazone (H2VPT); thermal, structural and spectroscopic studies
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Transition metal complexes of Vanillin-4N-(2-pyridyl) thiosemicarbazone (H2VPT); thermal, structural and spectroscopic studies
چکیده انگلیسی

The present work carried out a study on the ligational behavior of the new ligand, Vanillin-4N-(2-pyridyl) thiosemicarbazone (H2VPT) 1 towards some transition metal ions namely, Mn2+, Co2+, Ni2+, Cu2+, Zn2+,Cd2+, Hg2+ and U6+. These complexes namely [Mn(HVPT)Cl] 2, [Co(VPT)(H2O)]2H2O 3, [Ni(HVPT)Cl(H2O)] 4, [Cu(HVPT)Cl(H2O)] 5, [Zn(VPT)(H2O)]H2O 6, [Cd(HVPT)Cl(H2O)] 7, [Hg(VPT)(H2O)]H2O 8 and [UO2(H2VPT)(OAc)2]H2O 9, were characterized by elemental analysis, spectral (IR, 1H NMR and UV–vis) and magnetic moment measurements. The suggested structures were confirmed by applying geometry optimization and conformational analysis.Thermal properties and decomposition kinetics of all compounds are investigated. The interpretation, mathematical analysis and evaluation of kinetic parameters (E, A, ΔH, ΔS and ΔG) of all thermal decomposition stages have been evaluated using Coats–Redfern equation. ESR spectra of [Cu(HVPT)Cl]H2O at room temperature show broad signal, indicating spin-exchange interactions between copper(II) ions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Structure - Volume 969, Issues 1–3, 22 April 2010, Pages 33–39
نویسندگان
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