Abstract
Studying of charge-transfer (CT) and proton transfer interactions is essential due to their important role in many biological field and industrial applications. The current work will add more information’s about the nature of interaction between 3,5-diamino-1,2,4-triazole (DAT) and 6-methyl-1,3,5-triazine-2,4-diamine (MTDA) with 3,6-dichloro-2,5-dihydroxy-p-benzoquinone (chloranilic acid CLA) which was studied spectrophotometrically in Ethanol (EtOH) and Methanol (MeOH) solvents at different temperatures. The molecular composition of the formed complexes was studied by applying continuous variation and spectrophotometric titration methods and found to be 1:1 charge transfer complex for both Complex (DAT:CLA) and (MTDA:CLA) which are produced. Minimum-Maximum absorbance’s method has been applied to calculate the formation constant KCT and molecular extinction coefficient (ε); they recorded high values confirming high stability of the produced complexes. Oscillator strength (f), transition dipole moment (μ), ionization potential (IP) and dissociation energy (W) of the formed CT-complexes were also determined and evaluated; they showed solvent dependency. It is concluded that the formation constant (KCT) of the complexes is found to depend on the nature of both electron acceptor and donors and on the polarity of solvents.
Highlights
Charge transfer (CT) or proton transfer (PT) complexation is one of the important operations which have many applications in many fields like a biological system such as DNA binding [1], antimicrobial activity, antibacterial, antifungal [2] and drug receptor [3]
It is concluded that the formation constant (KCT) of the complexes is found to depend on the nature of both electron acceptor and donors and on the polarity of solvents
Due to the importance of triazines in many fields and in continuation of our studies on charge or proton transfer, in this paper we would like to add some information’s to the chemistry of triazanes through synthesis and characterization of a novel charge transfer complex including proton transfer hydrogen bonding between 3,5-diamino-1,2,4-triazole (DAT) as an electron donor is compared on their other electron donor 6-Methyl-1,3,5-triazine-2,4-diamine (MTDA) with electron acceptor chloranilic acid (CLA)
Summary
Charge transfer (CT) or proton transfer (PT) complexation is one of the important operations which have many applications in many fields like a biological system such as DNA binding [1], antimicrobial activity, antibacterial, antifungal [2] and drug receptor [3]. It used in controlling the speed of enzymatic reactions [4], modern technology like organic solar cells [5], electrical conductivity and optical properties [6].
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