نمایش مختصر رکورد

dc.contributor.authorSemnani, Abolfazlen_US
dc.contributor.authorShareghi, Behzaden_US
dc.contributor.authorPouretedal, Hamid Rezaen_US
dc.date.accessioned1399-07-08T20:14:26Zfa_IR
dc.date.accessioned2020-09-29T20:14:26Z
dc.date.available1399-07-08T20:14:26Zfa_IR
dc.date.available2020-09-29T20:14:26Z
dc.date.issued2004-04-01en_US
dc.date.issued1383-01-13fa_IR
dc.date.submitted2002-09-04en_US
dc.date.submitted1381-06-13fa_IR
dc.identifier.citationSemnani, Abolfazl, Shareghi, Behzad, Pouretedal, Hamid Reza. (2004). Spectrophotometric Study of the Complexation of Iodine and Bromine with Tetrabutylammonium Halides and Cryptand 222 in Dichloromethane Solution. Iranian Journal of Chemistry and Chemical Engineering (IJCCE), 23(1), 1-6.en_US
dc.identifier.issn1021-9986
dc.identifier.urihttp://www.ijcce.ac.ir/article_7784.html
dc.identifier.urihttps://iranjournals.nlai.ir/handle/123456789/84161
dc.description.abstract<em>A spectrophotometric study concerning the interactoin between iodine and bromine with tetrabutylammonium iodide (TBAI), tetrabutyl- ammonium bromide (TBABr) and cryptand 222 (C222) has been performed in dichloromethane solution at 25</em><em>°</em><em>C. The results are indicative of the formation of TBA<sup>+</sup>X<sub>3</sub><sup>-</sup> and  C222X<sup>+</sup>X<sub>3</sub><sup>-</sup>  through equilibrium and formation of C222X<sup>+</sup>X<sup>-</sup>  through nonequilibrium reactions. The stability constants of the equilibrium reactions were evaluated from the computer fitting of the absorbance-mole ratio data. It was found that iodine complexes were more stable than bromine ones. Comparision of the spectra of I<sub>2</sub>-TBAI with the I<sub>2</sub>-C222 mixtures indicates that the isosbestic points of the two systems  are not identical. A similar behavior is observed for the corresponding bromine spectra. Comparision of the spectra of iodine complexes with those of bromine also indicates that in the spectra of iodine complexes 1) the wavelength of the isosbestic point is less than λ<sub>max</sub> of the free iodine and 2) addition of C222 or TBAI decreases the absorption intensity at λ<sub>max</sub> of iodine. However, in each case the reverse is observed for the spectra of bromine complexes. The possible reasons for the observed differences in various spectra are explained.</em>en_US
dc.format.extent165
dc.format.mimetypeapplication/pdf
dc.languageEnglish
dc.language.isoen_US
dc.publisherIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRen_US
dc.relation.ispartofIranian Journal of Chemistry and Chemical Engineering (IJCCE)en_US
dc.subjectCryptand 222en_US
dc.subjectTetrabutylammonium iodideen_US
dc.subjectTetrabutyl-ammonium bromideen_US
dc.subjectSpectrophotometryen_US
dc.subjectIodineen_US
dc.subjectBromineen_US
dc.subjectDichloromethaneen_US
dc.subjectOrganic Chemistryen_US
dc.titleSpectrophotometric Study of the Complexation of Iodine and Bromine with Tetrabutylammonium Halides and Cryptand 222 in Dichloromethane Solutionen_US
dc.typeTexten_US
dc.typeResearch Articleen_US
dc.contributor.departmentFaculty of Science, Shahrekord University, Shahrekord, P. O. Box 115, I.R. IRANen_US
dc.contributor.departmentFaculty of Science, Shahrekord University, Shahrekord, P. O. Box 115, I.R. IRANen_US
dc.contributor.departmentFaculty of Science, Malek-Ashtar University of Technology, Shahinshahr, I.R. IRANen_US
dc.citation.volume23
dc.citation.issue1
dc.citation.spage1
dc.citation.epage6


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