TY - JOUR
T1 - Synthesis, spectroscopic and thermal studies on solid charge-transfer molecular complexes formed in the reaction of 1-(2-aminoethyl)piperidine with π- And σ-acceptors
AU - Mostafa, Adel
AU - Benjamin Cieslinski, G.
AU - Bazzi, Hassan S.
PY - 2012/12/12
Y1 - 2012/12/12
N2 - The solid charge-transfer molecular complexes formed in the reaction of the electron donor 1-(2-aminoethyl) piperidine (AEP) with the σ-acceptor iodine and π-acceptors 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ), 7,7,8,8-tetracyanoquinodimethane (TCNQ) and 2,4,4,6-tetrabromo-2,5- cyclohexadienone (TBCHD)were studied in chloroform at 25 0C. These were investigated through electronic spectra, infrared spectra, thermal and elemental analysis. The obtained results showed that the formed solid CT-complexes have the formulas [(AEP)I]+I3-, [(AEP)(DDQ) 2], [(AEP)(TCNQ)2] and [(AEP)(TBCHD)] in full agreement with the known reaction stoichiometries in solution as well as the elemental measurements. The formation constant KCT (L mol-1), the molar extinction coefficient *CT (L mol-1 cm -1), the free energy change ΔG° (cal mol-1), the charge transfer energy ECT, and the ionization potential Ip were calculated for the CT-complexes [(AEP)I]+I3-, [(AEP)(DDQ) 2], [(AEP)(TCNQ)2] and [(AEP)(TBCHD)].
AB - The solid charge-transfer molecular complexes formed in the reaction of the electron donor 1-(2-aminoethyl) piperidine (AEP) with the σ-acceptor iodine and π-acceptors 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ), 7,7,8,8-tetracyanoquinodimethane (TCNQ) and 2,4,4,6-tetrabromo-2,5- cyclohexadienone (TBCHD)were studied in chloroform at 25 0C. These were investigated through electronic spectra, infrared spectra, thermal and elemental analysis. The obtained results showed that the formed solid CT-complexes have the formulas [(AEP)I]+I3-, [(AEP)(DDQ) 2], [(AEP)(TCNQ)2] and [(AEP)(TBCHD)] in full agreement with the known reaction stoichiometries in solution as well as the elemental measurements. The formation constant KCT (L mol-1), the molar extinction coefficient *CT (L mol-1 cm -1), the free energy change ΔG° (cal mol-1), the charge transfer energy ECT, and the ionization potential Ip were calculated for the CT-complexes [(AEP)I]+I3-, [(AEP)(DDQ) 2], [(AEP)(TCNQ)2] and [(AEP)(TBCHD)].
KW - 1-(2-Aminoethyl)piperidine
KW - CT-complexes
KW - DDQ
KW - Iodine
KW - TBCHD
KW - TCNQ
UR - http://www.scopus.com/inward/record.url?scp=84865346742&partnerID=8YFLogxK
U2 - 10.1016/j.molstruc.2012.06.049
DO - 10.1016/j.molstruc.2012.06.049
M3 - Article
AN - SCOPUS:84865346742
SN - 0022-2860
VL - 1029
SP - 45
EP - 52
JO - Journal of Molecular Structure
JF - Journal of Molecular Structure
ER -