Synthesis and spectrophotometric studies of charge transfer complexes of p-nitroaniline with benzoic acid in different polar solvents

作者: Neeti Singh , Afaq Ahmad

DOI: 10.1016/J.MOLSTRUC.2014.05.076

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摘要: Abstract The charge transfer complexes of the donor p-nitroaniline (PNA) with π -acceptor benzoic acid (BEA) have been studied spectrophotometrically in various solvents such as acetone, ethanol, and methanol at room temperature using an absorption spectrophotometer. outcome suggests that formation CT-complex is comparatively high less polar solvent. stoichiometry was found to be 1:1. physical parameters were evaluated by Benesi–Hildebrand equation. data are discussed terms constant ( K CT ), molar extinction coefficient (ɛ Standard Gibbs free energy (Δ G 0 oscillator strength f transition dipole moment μ EN resonance R N ) ionization potential I D ). complex depends upon nature electron acceptor, donor, polarity used. It also observed a molecular stabilized hydrogen bonding. has confirmed UV–visible, FT-IR, 1 H NMR TGA/DTA. structure of the [(PNA) + − ]. A general mechanism for its proposed.

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