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AuthorAlQaradawi, Siham Y.
AuthorMostafa, Adel
AuthorBazzi, Hassan S.
Available date2017-02-19T06:10:08Z
Publication Date2012-03-14
Publication NameJournal of Molecular Structure
Identifierhttp://dx.doi.org/10.1016/j.molstruc.2012.01.002
CitationSiham Y. AlQaradawi, Adel Mostafa, Hassan S. Bazzi."Synthesis, spectroscopic and thermal studies of charge-transfer molecular complexes formed in the reaction of 1,4-bis (3-aminopropyl) piperazine with σ- and π acceptors", Volume 1011, Pp. 172-180
ISSN00222860
URIhttp://www.sciencedirect.com/science/article/pii/S002228601200004X
URIhttp://hdl.handle.net/10576/5269
AbstractAbstract In the present study, solid charge-transfer (CT) molecular complexes formed in the reaction of the electron donor 1,4-bis (3-aminopropyl) piperazine (APPIP) with the σ-electron acceptor iodine and π-acceptors 7,7,8,8-tetracyanoquinodimethane (TCNQ), tetracyanoethylene (TCNE), 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ), and 2,4,4,6-tetrabromo-2,5-cyclohexadienone (TBCHD) have been investigated spectrophotometrically in chloroform at 25°C. These were characterized through electronic and infrared spectra as well as elemental and thermal analysis. The obtained results showed that the formed solid CT-complexes have the formulas [(APPIP) I]+I3-, [(APPIP)(TCNQ)], [(APPIP)2(TCNE)3], [(APPIP)(DDQ)] and [(APPIP)(TBCHD)] in full agreement with the known reaction stoichiometries in solution as well as the elemental measurements. The formation constant KCT, molar extinction coefficient εCT, free energy change ΔG0, CT energy ECT and the ionization potential Ip have been calculated for the CT complexes [(APPIP) I]+I3-, [(APPIP)(TCNQ)], [(APPIP)(DDQ)] and [(APPIP)(TBCHD)].
Languageen
PublisherElsevier
Subject1,4-Bis (3-aminopropyl) piperazine
Iodine
TBCHD
Charge-transfer
Spectra
Thermal analysis
TitleSynthesis, spectroscopic and thermal studies of charge-transfer molecular complexes formed in the reaction of 1,4-bis (3-aminopropyl) piperazine with σ- and π acceptors
TypeArticle
Pagination172-180
Volume Number1011
dc.accessType Abstract Only


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