کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5160894 1501684 2017 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis, crystallographic, spectral, and spectrophotometric studies of proton transfer complex of 1,2-dimethylimidazole with 3,5-dinitrobenzoic acid in different polar solvents
ترجمه فارسی عنوان
سنتز، مطالعات کریستالوگرافی، طیفی و اسپکتروفتومتریک پروتئین های انتقال پروتئین 1،2-دی متیل آمیدازول با اسید 3،5-دینیتروبنزوئیک در حلال های مختلف قطبی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی
The molecular interaction between 1, 2-dimethylimidazole (DMI) and 3,5-dinitrobenzoic acid (DNBA) has been investigated in methanol at room temperature. The stoichiometry of the synthesized CT complex was found to be 1:1 using the straight line method of Benesi-Hildebrand equation. The structure of the resulting CT complex was isolating and characterized using X-ray crystallography, FTIR and 1H NMR spectroscopic techniques. The thermal composition and stability of the CT complex were analyzed using thermogravimetric and differential thermal analysis (TGA and DTA). UV-visible spectrophotometric technique was used to the determine the various important physical parameters such as formation constant (KCT), molar extinction coefficient (εCT), energy of interaction (ECT), ionization potential (ID), resonance energy (RN), free energy (ΔG°), oscillator strength (ƒ) and transition dipole moment (μN). The effect of polarity of the solvent and concentration of acceptor on these parameters have been investigated. The results indicate that charge transfer complex (CTC) is more stable in less polar solvent due to the high value of the formation constant. A polymeric network through hydrogen bonding interaction between neighboring moieties was observed. This has also been attributed to the formation of 1:1 type CT complex.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Structure - Volume 1133, 5 April 2017, Pages 144-153
نویسندگان
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