کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1234068 | 968821 | 2010 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ligational, analytical and biological applications on oxalyl bis(3,4-dihydroxybenzylidene) hydrazone
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
The molecular modeling and parameters have been calculated to confirm the geometry of oxalyl bis(3,4-dihydroxybenzylidene) hydrazone, H6L. The metal complexes of Cr3+, VO2+, ZrO2+, HfO2+, UO22+ and MoO22+ with H6L have been prepared and characterized by partial elemental analysis, spectral studies (electronic; IR), thermal analysis and magnetic measurements. The data suggest the formation of polymer complexes with a unit [Cr(H4L)(H2O)3Cl]·H2O, [VO(H4L)(H2O)2], [Hf(H4L)(H2O)]·H2O [UO2(H4L)(H2O)2]·2H2O [MoO2(H4L)] and [(ZrO)2(H2L)-(C2H5OH)2]. The ligand behaves as a dibasic bidentate in all complexes except ZrO2+ which acts as a tetrabasic tetradentate with the two ZrO2+ ions. An octahedral geometry was proposed for the Cr3+, HfO2+, MoO22+and UO22+ complexes and square pyramid for VO2+. The Cr3+ is necessary to degrade the DNA of eukaryotic subject completely; the other complexes have little effect. H6L was found suitable as a new reagent for the separation and preconcentration of ZrO2+ ions from different water samples using flotation technique with satisfactory results.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 77, Issue 1, 15 September 2010, Pages 297-303
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 77, Issue 1, 15 September 2010, Pages 297-303
نویسندگان
Ahmed A. El-Asmy, O.A. El-Gammal, H.A. Radwan, S.E. Ghazy,