MOLECULAR ABSORPTION SPECTROSCOPY IN THE UV-VIS REGION FOR THE QUINOLINE-N-OXIDE, NICOTINAMIDE-N-OXIDE AND 2,2-DITHIOBISPYRIDINE-N-OXIDE LIGANDS
Journal Title: Periódico Tchê Química - Year 2017, Vol 14, Issue 27
Abstract
Required The purpose of this study was to analyze and quantify spectral parameters, the absorption bands, specifically in the uv-visible region of some N-oxide ligands. From the spectra, the area under the absorption band, the molar absorptivity, the integrated absorption coefficient and the oscillator strength by the Gaussian approximation method were calculated for each of them, using the proposed evaluation by Drago and Figgs. According to the obtained results, it can be concluded that the heterocyclic compounds studied absorb very well electromagnetic radiation in the ultraviolet region. For the ligands QUI-NO and NIC-NO it was observed that there are two types of bands, primary and secondary, being transitions of type p ® p * and n ® p*, respectively. For DITBIS-NO, there was only one primary band (transition 1) and two additional shoulders, which had the highest observed absorbance coefficient. These ligands are expected as potential electron donors in complex systems whose purpose is to change the energy levels of the electronic system in order to promote a better utilization of the absorbed energy and therefore a better efficiency.
Authors and Affiliations
Francisco Jose Santos LIMA
Keywords
Related Articles
- EP ID EP252209
- DOI -
- Views 179
- Downloads 0
MATHEMATICAL MODELING OF THE STEFAN'S PROBLEMS WITH THE DETERMINATION OF THE COORDINATES AND THE VELOCITIES OF THE DYNAMICALLY MOVING BORDERS OF PHASE TRANSFORMATIONS
Dynamic problem of heat conduction in multiphase media with many dynamically moving boundaries of phase transformations, the coordinates and velocities of which are not known in advance and are determined based on experi...
IMPROVEMENT OF THE TRANSESTERIFICATION PARAMETERS USING OIL BLENDS: CRUDE FISH OIL & FRYING OIL
To improve the parameters of the transesterification process by the basic route for the production of biodiesel, crude fish oil (AP), obtained from the viscera of fish, and residual vegetable oils (AR) blenders were used...
METHODOLOGICAL REQUIREMENTS FOR THE ARRANGEMENT OF INDEPENDENT WORK ON NEURO-LINGUISTIC PROGRAMMING TECHNIQUES FOR MATHEMATICAL DISCIPLINES AT THE UNIVERSITY
Possibilities of Neuro-linguistic Programming (NLP) techniques are extensive. The techniques of neurolinguistic programming have the opportunity to help a person to modify his thinking and behavior so as to learn how to...
BIOTECHNOLOGICAL APPROACHES IN PROCESSING OF SECONDARY RAW MATERIALS OF MEAT INDUSTRY
The radical change in the quality of the processed meat raw materials, which does not meet the standards, calls for the necessity to apply biotechnology methods in order to improve the quality and obtain high nutritional...
THE STUDY OF WATER FLOWS OF TECHNOLOGICAL WATER CYCLE AND WASTEWATER OF METALLURGICAL PRODUCTION CONCERNING POLLUTION CONTENT
The work concerning the definition of the composition of water flows of the technological water cycle and wastewater of metallurgical production outlet for the researched period has been carried out. Wastewater of pyrrh...