title: Spectroscopic and structural characterization of the charge-transfer interaction of N,N'-bis-alkyl derivatives of 1,4,6,8-naphthalenediimide with chloranilic and picric acids.
abstract: Charge-transfer (CT) complexes formed from the reactions of two N,N'-bis-alkyl derivatives of 1,4,6,8-naphthalenediimide such as N,N'-bis[2-hydroxyethyl)]-1,4,6,8-naphthalenediimide (BHENDI) and N,N'-bis-[2-N,N-dimethylaminoethyl)]-1,4,6,8-naphthalenediimide (BDMAENDI) with chloranilic acid (CLA) and piciric acid (PA) as pi-acceptors, have been studied spectrophotometrically in methanol and chloroform, respectively at 25 degrees C. The photometric titration curves for the reactions indicated that the data obtained refer to 1:1 charge-transfer complexes of [(BHENDI)(CLA)], [(BDMAENDI)(CLA)], [(BHENDI)(PA)] and [(BDMAENDI)(PA)] were formed. Benesi-Hildebrand and its modification methods were applied to the determination of association constant (K), molar extinction coefficient (epsilon). The solid CT complexes have been synthesized and characterization by different spectral methods.
authors.affiliation: Department of Chemistry, Faculty of Education, Port Said, Suez-Canal University, Egypt. msrefat@yahoo.com
authors.forename: Moamen S
authors.initials: MS
authors.lastname: Refat
authors.forename: Hamdy A
authors.initials: HA
authors.lastname: Ahmed
authors.forename: Ivo
authors.initials: I
authors.lastname: Grabchev
authors.forename: Lamia A
authors.initials: LA
authors.lastname: El-Zayat
mesh_terms: D000478:Alkylation; D000577:Amides / Q000032:analysis* / Q000737:chemistry*; D016227:Benzoquinones / Q000737:chemistry*; D007477:Ions / Q000737:chemistry; D007700:Kinetics; D013058:Mass Spectrometry; D015394:Molecular Structure; D009281:Naphthalenes / Q000032:analysis* / Q000737:chemistry*; D010851:Picrates / Q000737:chemistry*; D013057:Spectrum Analysis / Q000379:methods*; D013816:Thermodynamics
chemical_list: D000577:Amides; D016227:Benzoquinones; D007477:Ions; C524455:N,N'-bis(2-hydroxyethyl)-1,4,6,8-naphthalenediimide; D009281:Naphthalenes; D010851:Picrates; C005858:picric acid; C014400:chloranilic acid