Charge-transfer complexes of 4-methylpiperidine with - and -acceptors. Academic Article uri icon


  • The solid charge-transfer (CT) molecular complexes formed in the reaction of the electron donor 4-methylpiperidine (4MP) with the -electron acceptor iodine and -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 CT, free energy change G(0), 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)].

published proceedings

  • Spectrochim Acta A Mol Biomol Spectrosc

author list (cited authors)

  • AlQaradawi, S. Y., Mostafa, A., & Bazzi, H. S.

citation count

  • 4

complete list of authors

  • AlQaradawi, Siham Y||Mostafa, Adel||Bazzi, Hassan S

publication date

  • January 2015