Spectroscopic and thermal studies on the charge transfer complexes formed between morpholine as donor with p-chloranil and 7,7 `,8,8 `-tetracyanoquinodimethane

Charge-transfer (CT) complexes formed between morpholine (Morp) as donor with CHL and TCNQ as acceptors have been studied spectrophotometrically. The synthesis and characterization of morpholine CT-complexes of p-chloranil, {[}(Morp)(CHL)] and 7,7',8,8'-tetracyanoquinodimethane, {[}(Morp)(TCNQ)] were described. These complexes are readily prepared from the reaction of Morp with CHL and TCNQ within CHCl3 and/or MeOH solvents. IR, UV-Vis techniques, elemental (C, H, and N) and thermal analyses (TG/DTG) characterize the two Morp charge-transfer complexes. Benesi-Hildebrand and its modification methods were applied to the determination of association constant (K), and molar extinction coefficient (epsilon). (C) 2011 King Saud University. Production and hosting by Elsevier B.V. All rights reserved.