Spectrophotometric and spectroscopic studies of charge transfer complexes of p-Toluidine (cas 106-49-0) as an electron donor with picric acid as an electron acceptor in different solvents

Add time:08/25/2019    Source:sciencedirect.com

The charge transfer complexes of the donor p-Toluidine (cas 106-49-0) with π-acceptor picric acid have been studied spectrophotometrically in various solvents such as carbon tetrachloride, chloroform, dichloromethane acetone, ethanol, and methanol at room temperature using absorption spectrophotometer. The results indicate that formation of CTC in non-polar solvent is high. The stoichiometry of the complex was found to be 1:1 ratio by straight-line method between donor and acceptor with maximum absorption bands. The data are discussed in terms of formation constant (KCT), molar extinction coefficient (ɛCT), standard free energy (ΔGo), oscillator strength (f), transition dipole moment (μEN), resonance energy (RN) and ionization potential (ID). The results indicate that the formation constant (KCT) for the complex was shown to be dependent upon the nature of electron acceptor, donor and polarity of solvents that were used.

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