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Author Gaballa, Akmal S.en_US
Author Wagner, Christophen_US
Author Teleb, Said M.en_US
Author Nour, El-Metwallyen_US
Author Elmosallamy, M.A.F.en_US
Author Kaluđerović, Goran N.en_US
Author Schmidt, Harryen_US
Author Steinborn, Dirken_US
Available date 2010-01-07T07:15:50Zen_US
Publication Date 2007-07-11en_US
Publication Name Journal of Molecular Structure
Citation Gaballa, A. S., Wagner, C., Teleb, S. M., Nour, E. M., Elmosallamy, M. a F., Kaluderović, G. N., … Steinborn, D. (2008). Preparation, spectroscopic and structural studies on charge-transfer complexes of 2,9-dimethyl-1,10-phenanthroline with some electron acceptors. Journal of Molecular Structure, 876, 301–307en_US
URI http://dx.doi.org/10.1016/j.molstruc.2007.07.003en_US
URI http://hdl.handle.net/10576/10617en_US
Abstract Charge-transfer (CT) complexes formed in the reactions of 2,9-dimethyl-1,10-phenanthroline (Me2phen) with some acceptors such as chloranil (Chl), picric acid (HPA) and chloranilic acid (H2CA) have been studied in the defined solvent at room temperature. Based on elemental analysis and infrared spectra of the solid CT-complexes along with the photometric titration curves for the reactions, obtained data indicate the formation of 1:1 charge-transfer complexes [(Me2phen)(Chl)] (1), [(Me2phenH)(PA)] (2) and [(Me2phenH)(HCA)] (3), respectively, was proposed. In the three complexes, infrared and 1H NMR spectroscopic data indicate a charge-transfer interaction and as far as complexes 2 and 3 are concerned this interaction is associated with a hydrogen bonding. The formation constants for the complexes (KC) were shown to be dependent upon the nature of the electron acceptors used. The X-ray structure of complex 3 indicate the formation of dimeric units [Me2phenH]2[(HCA)2] in which the two anions (HCA)− are connected by two O–HO hydrogen bonds whereas the cations and anions are joined together by strong three-center (bifurcated) N–HO hydrogen bonds. Furthermore, the cations are arranged in a π–π stacking.en_US
Language enen_US
Publisher Elsevieren_US
Subject Charge transferen_US
Subject 2,9-Dimethyl-1,10-phenanthrolineen_US
Subject Electron acceptorsen_US
Subject UV–visibleen_US
Subject IRen_US
Subject 1H NMRen_US
Subject X-ray structure analysisen_US
Title Preparation, spectroscopic and structural studies on charge-transfer complexes of 2,9-dimethyl-1,10-phenanthroline with some electron acceptorsen_US
Type Articleen_US


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