Charge-transfer complexes of 4-methylpiperidine with σ- and π-acceptors
Author | AlQaradawi, Siham Y. |
Author | Mostafa, Adel |
Author | Bazzi, Hassan S. |
Available date | 2017-02-12T08:33:07Z |
Publication Date | 2015-01-25 |
Publication Name | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy |
Identifier | http://dx.doi.org/10.1016/j.saa.2014.07.050 |
Citation | AlQaradawi, S. Y., Mostafa, A. & Bazzi, H. S., (2015) “Charge-transfer complexes of 4-methylpiperidine with σ- and π-acceptors” Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 135, 498–505 |
ISSN | 1386-1425 |
Abstract | The solid charge-transfer (CT) molecular complexes formed in the reaction of the electron donor 4-methylpiperidine (4MP) with the σ-electron acceptor iodine and π-acceptors 7,7,8,8-tetracyanoquinodimethane (TCNQ), 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 [(4MP) I]+I−3, [(4MP)(DDQ)2] and [(4MP)(TBCHD)] and with TCNQ the adduct [TCMPQDM] is obtained through N-substitution reaction 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 [(4MP) I]+I−3, [(4MP)(DDQ)2] and [(4MP)(TBCHD)]. |
Language | en |
Publisher | Elsevier B.V. |
Subject | 4-Methylpiperidine Iodine TBCHD DDQ Spectra |
Type | Article |
Pagination | 498–505 |
Volume Number | 135 |
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