کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1237968 968915 2009 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation, magnetic and EPR spectral studies of copper(II) complexes of an anticancer drug analogue
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Preparation, magnetic and EPR spectral studies of copper(II) complexes of an anticancer drug analogue
چکیده انگلیسی

Ten new copper(II) complexes of five potential bisthiocarbohydrazone and biscarbohydrazone ligands were synthesized and physico-chemically characterized. The spectral and magnetic studies of compounds are consistent with the formation of asymmetric di-, tri- or tetranuclear copper(II) complexes of deprotonated forms of respective ligands. The variable temperature magnetic susceptibility measurements of all complexes show antiferromagnetic interactions between the Cu(II) centers, in agreement with very broad powder EPR spectra. However, frozen solution EPR spectral studies are found in contradiction with the solid-state magnetic studies and indicate that the complexes are not very stable in solutions; the possible fragmentations of complexes are found in agreement with MALDI MS results. The EPR spectral simulation of most of the compounds is in agreement with the presence of two uncoupled Cu(II) species in solution.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 72, Issue 3, April 2009, Pages 474–483
نویسندگان
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