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Vol. 37 No. 2 (2025): Vol 37 Issue 2, 2025

Copyright (c) 2025 Arunapriya Lakkadi

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Synthesis of Charge Transfer Complexation between 2,5-Dihydroxy-p-benzoquinone and 2-Amino Aniline; Spectral Characterization and DFT Analysis

https://doi.org/10.14233/ajchem.2025.32990
L. Arunapriya
Department of Chemistry, Bhavan’s Vivekananda College of Science, Commerce and Humanities, Sainikpuri, Secunderabad-500094, India
https://orcid.org/0000-0001-9100-8857
N. Venkatesh
Department of Chemistry, Osmania University, Hyderabad-500007, India
https://orcid.org/0000-0001-9312-9572

Corresponding Author(s) : L. Arunapriya

e.arunapriya@gmail.com

Asian Journal of Chemistry, Vol. 37 No. 2 (2025): Vol 37 Issue 2, 2025

Abstract

A charge transfer (CT) complex was synthesized using electron donor 2-amino aniline (AA) and electron acceptor 2,5-dihydroxy benzoquinone (DHBQ) in an acetonitrile medium. The charge transfer complex stoichiometry is 1:1. The Benesi-Hildebrand equation was used to determine the molar absorptivity (εCT), association constant (KCT) and other physical constants. The synthesized solid CT-complex was analyzed by 1H NMR and FT-IR spectroscopic methods. DFT study of the CT complex (gas phase) at the basis set B3LYP/6-31++G also gave similar results of the experimental work. Mulliken atomic charges and reactive parameters of acceptor and donor recommend that AA is good electron donor and DHBQ is good electron acceptor so that form good highly stable charge transfer complex. Finally, good agreement between the experimental and theoretical computations was observed confirming that the basis set used is appropriate for the system under examination.

Keywords

2-Amino aniline 2,5-Dihydroxy-p-benzoquinone Charge transfer complex DFT study Mulliken charges
Arunapriya, L., & Venkatesh, N. (2025). Synthesis of Charge Transfer Complexation between 2,5-Dihydroxy-p-benzoquinone and 2-Amino Aniline; Spectral Characterization and DFT Analysis. Asian Journal of Chemistry, 37(2), 284–290. https://doi.org/10.14233/ajchem.2025.32990
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