Synthesis, characterization and spectroscopic structural studies of charge-transfer complexes of 1,4,8,11-tetraazacyclotetradecane-5,7-dione with iodine, TCNE and DDQ
المؤلف | Nour, El-Metwally |
المؤلف | AlQaradawi, Siham Y. |
المؤلف | Mostafa, Adel |
المؤلف | Shams, Eman |
المؤلف | Bazzi, Hassan S. |
تاريخ الإتاحة | 2017-02-21T10:04:59Z |
تاريخ النشر | 2010-09-10 |
اسم المنشور | Journal of Molecular Structure |
المعرّف | http://dx.doi.org/10.1016/j.molstruc.2010.07.017 |
الاقتباس | Nour, 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 |
الرقم المعياري الدولي للكتاب | 0022-2860 |
الملخص | Three 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. |
اللغة | en |
الناشر | Elsevier B.V. |
الموضوع | 1,4,8,11-Tetraazacyclotetradecane-5,7-dione Iodine TCNE DDQ Spectra CT-complexes |
النوع | Article |
الصفحات | 218–224 |
رقم العدد | 1-3 |
رقم المجلد | 980 |
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