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AuthorNour, El-Metwally
AuthorAlQaradawi, Siham Y.
AuthorMostafa, Adel
AuthorShams, Eman
AuthorBazzi, Hassan S.
Available date2017-02-21T10:04:59Z
Publication Date2010-09-10
Publication NameJournal of Molecular Structureen_US
Identifierhttp://dx.doi.org/10.1016/j.molstruc.2010.07.017
CitationNour, E., AlQaradawi, S. Y., Mostafa, A., Shams, E., and Bazzi, H. S. (2010)” Synthesis, characterization and spectroscopic structural studies of charge-transfer complexes of 1,4,8,11-tetraazacyclotetradecane-5,7-dione with iodine, TCNE and DDQ” Journal of Molecular Structure, vol.980, issue 1-3, pp. 218–224
ISSN0022-2860
URIhttp://www.sciencedirect.com/science/article/pii/S0022286010005855
URIhttp://hdl.handle.net/10576/5286
AbstractThree novel aqueous and solid charge-transfer complexes are synthesized by the reaction of the polynitrogen cyclic n-donor 1,4,8,11-tetraazacyclotetradecane-5,7-dione (TACTDD) with the σ-acceptor iodine, the aliphatic π-acceptor tetracyanoethylene (TCNE) as well as with the aromatic π-acceptor 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) using chloroform as the medium solvent. Photometric titration measurements of the CT-solution complexes confirm the donor to acceptor ratios are 1:2 for TACTDD–I2 and TACTDD–TCNE reactions while is 1:1 for the reaction TACTDD–DDQ. These reaction stoichiometries are supported by the elemental, thermal and infrared measurements for the formed CT-solids. Accordingly, the reaction products are formulated as [(TACTDD) I]⋅I3, [(TACTDD)(TCNE)2] and [(TACTDD)(DDQ)]. The effect of the substituents, electron donating or withdrawing groups in the donor and acceptors compositions on their CT-interactions is discussed.
Languageen
PublisherElsevier B.V.
Subject1,4,8,11-Tetraazacyclotetradecane-5,7-dione
SubjectIodine
SubjectTCNE
SubjectDDQ
SubjectSpectra
SubjectCT-complexes
TitleSynthesis, characterization and spectroscopic structural studies of charge-transfer complexes of 1,4,8,11-tetraazacyclotetradecane-5,7-dione with iodine, TCNE and DDQ
TypeArticle
Pagination218–224
Issue Number1-3
Volume Number980


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