TY - JOUR
T1 - Synthesis, spectroscopic, thermal and structural investigations of charge-transfer complexes of 4,4′-trimethylenedipiperidine with chloranil, TBCHD, DDQ, TCNQ and iodine
AU - Shahada, Lamis
AU - Mostafa, Adel
AU - Nour, El Metwally
AU - Bazzi, Hassan S.
PY - 2009/9/17
Y1 - 2009/9/17
N2 - The charge-transfer interactions between the electron donor 4,4′-trimethylenedipiperidine (TMDP) and the acceptors 2,3,5,6-tetrachloro-1,4-benzoquinone (chloranil), 2,4,4,6-tetrabromo-2,5-cyclohexadienone (TBCHD), 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ), 7,7′,8,8′-tetracyanoquinodimethane (TCNQ) and iodine have been studied spectrophotometrically in CHCI3 solutions. The formed solid charge-transfer complexes were also isolated and characterized through infrared spectra as well as thermal and elemental analysis. The stoichiometry of the complexes was found to be 1:1 in the case of TMDP-chloranil and TMDP-TBCHD systems and 1:2 in the case of TMDP-DDQ and TMDP-TCNQ systems and 1:3 in the case of TMDP-iodine system. Taking this into consideration along with infrared spectra and thermal and elemental analysis, the formed CT-complexes have the formulas [(TMDP)(chloranil)], [(TMDP)(TBCHD)], [(TMDP)(DDQ)2] [(TMDP)(TCNQ)2] and [(TMDP)I]+·I5-, respectively.
AB - The charge-transfer interactions between the electron donor 4,4′-trimethylenedipiperidine (TMDP) and the acceptors 2,3,5,6-tetrachloro-1,4-benzoquinone (chloranil), 2,4,4,6-tetrabromo-2,5-cyclohexadienone (TBCHD), 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ), 7,7′,8,8′-tetracyanoquinodimethane (TCNQ) and iodine have been studied spectrophotometrically in CHCI3 solutions. The formed solid charge-transfer complexes were also isolated and characterized through infrared spectra as well as thermal and elemental analysis. The stoichiometry of the complexes was found to be 1:1 in the case of TMDP-chloranil and TMDP-TBCHD systems and 1:2 in the case of TMDP-DDQ and TMDP-TCNQ systems and 1:3 in the case of TMDP-iodine system. Taking this into consideration along with infrared spectra and thermal and elemental analysis, the formed CT-complexes have the formulas [(TMDP)(chloranil)], [(TMDP)(TBCHD)], [(TMDP)(DDQ)2] [(TMDP)(TCNQ)2] and [(TMDP)I]+·I5-, respectively.
KW - 4,4′-Trimethylenedipiperidine
KW - Chloranil
KW - DDQ
KW - Iodine
KW - TBCHD
KW - TCNQ
UR - http://www.scopus.com/inward/record.url?scp=67949115525&partnerID=8YFLogxK
U2 - 10.1016/j.molstruc.2009.05.056
DO - 10.1016/j.molstruc.2009.05.056
M3 - Article
AN - SCOPUS:67949115525
SN - 0022-2860
VL - 933
SP - 1
EP - 7
JO - Journal of Molecular Structure
JF - Journal of Molecular Structure
IS - 1-3
ER -