title: Study of charge transfer complexes of menadione (vitamin K3) with a series of anilines.
abstract: Menadione (vitamin K(3)) has been shown to form charge transfer complexes with N,N-dimethyl aniline, N,N-dimethyl p-toluidine and N,N-dimethyl m-toluidine in CCl(4) medium. The CT transition energies are well correlated with the ionisation potentials of the anilines. The formation constants of the complexes have been determined at a number of temperatures from which the enthalpies and entropies of formation have been obtained. The formation constants exhibit a very good linear free energy relationship (Hammett) at all the temperatures studied.
authors.affiliation: Department of Chemistry, University College of Science, University of Calcutta, Kolkata 700009, India.
authors.forename: Purnendu
authors.initials: P
authors.lastname: Pal
authors.forename: Avijit
authors.initials: A
authors.lastname: Saha
authors.forename: Asok K
authors.initials: AK
authors.lastname: Mukherjee
authors.forename: Dulal C
authors.initials: DC
authors.lastname: Mukherjee
mesh_terms: D000814:Aniline Compounds / Q000737:chemistry*; D002251:Carbon Tetrachloride / Q000737:chemistry; D004305:Dose-Response Relationship, Drug; D004583:Electrons; D007700:Kinetics; D008956:Models, Chemical; D013053:Spectrophotometry; D013696:Temperature; D014052:Toluidines / Q000737:chemistry*; D024483:Vitamin K 3 / Q000737:chemistry*
chemical_list: D000814:Aniline Compounds; D014052:Toluidines; C029369:3-toluidine; D024483:Vitamin K 3; D002251:Carbon Tetrachloride; C023650:aniline