کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1236696 | 968873 | 2010 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Novel Fe (III) heterochelates: Synthesis, structural features and fluorescence studies
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Novel Fe (III) heterochelates: Synthesis, structural features and fluorescence studies Novel Fe (III) heterochelates: Synthesis, structural features and fluorescence studies](/preview/png/1236696.png)
چکیده انگلیسی
Fluorescence properties of five 4-acyl pyrazolone based hydrazides (H2SBn) and their Fe (III) heterochelates of the type [Fe(SBn)(L)(H2O)]·mH2O [H2SBn = nicotinic acid [1-(3-methyl-5-oxo-1-phenyl-4,5-di hydro-1H-pyrazol-4yl)-acylidene]-hydrazide; where acyl = -CH3, m = 4 (H2SB1); -C6H5, m = 2 (H2SB2); -CH2-CH3, m = 3 (H2SB3); -CH2-CH2-CH3, m = 1.5 (H2SB4); -CH2-C6H5, m = 1.5 (H2SB5) and HL = 1-cyclopropyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid] were studied at room temperature. The fluorescence spectra of heterochelates show red shift, which may be due to the chelation by the ligands to the metal ion. It enhances ligand ability to accept electrons and decreases the electron transition energy. The kinetic parameters such as order of reaction (n), energy of activation (Ea), entropy (S*), pre-exponential factor (A), enthalpy (H*) and Gibbs free energy (G*) have been reported.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 75, Issue 4, April 2010, Pages 1321-1328
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 75, Issue 4, April 2010, Pages 1321-1328
نویسندگان
C.K. Modi, D.H. Jani, H.S. Patel, H.M. Pandya,