Synthesis and Identification of Two Dyes Derived from p-amino phenol and Study of their Effectiveness as Corrosion Inhibitors: Experimental and Theoretical Analysis

Authors

Aseel F. Abdullah, Department of Chemistry, College of Science, University of Wasit, Kut, IraqFollow
Sura H. Kathim, Department of Chemistry, College of Science, University of Wasit, Kut, IraqFollow
Athra G. Sager, Department of Chemistry, College of Science, University of Wasit, Kut, IraqFollow
Jawad Kadhim Abaies, Department of Chemistry, College of Science, University of Wasit, Kut, IraqFollow

Abstract

In this research, two dyes of p-amino phenol were synthesized by reacting the diazonium salt of p-amino phenol with aromatic compounds, including 1-naphthol and p-amino phenol. The new dyes (a and b) were identified by FT-IR, 1H-NMR, and measurements of some physical properties. The inhibitory activity of the prepared azo compounds against corrosion of carbon steel type C45 in HCl (0.1 M) medium was investigated experimentally by electrochemical measurements. The quantum mechanical method was used to calculate the geometrical structure and physical properties using the Gaussian 09 W program and the density functional theory (DFT) of B3LYP at the 6-311+G (2d, 2p) level. The DFT was utilized for the calculation of inhibition efficiency parameters for dyes that were at equilibrium geometry in vacuum media. The resulting theoretical data revealed that the optimum corrosion inhibitor was compound a.

Keywords

Azo, Corrosion inhibitor, Density functional theory, Electro chemistry, Mullikan charges

Subject Area

Chemistry

Article Type

Article

First Page

1131

Last Page

1142

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite this Article

Abdullah, Aseel F.; Kathim, Sura H.; Sager, Athra G.; and Abaies, Jawad Kadhim (2025) "Synthesis and Identification of Two Dyes Derived from p-amino phenol and Study of their Effectiveness as Corrosion Inhibitors: Experimental and Theoretical Analysis," Baghdad Science Journal: Vol. 22: Iss. 4, Article 6.
DOI: https://doi.org/10.21123/bsj.2024.9948