Display options
Cite
Al-Azawi KF, Al-Baghdadi SB, Mohamed AZ, et al. Synthesis, inhibition effects and quantum chemical studies of a novel coumarin derivative on the corrosion of mild steel in a hydrochloric acid solution. Chem Cent J. 2016;10:23doi: 10.1186/s13065-016-0170-3.
Al-Azawi, K. F., Al-Baghdadi, S. B., Mohamed, A. Z., Al-Amiery, A. A., Abed, T. K., Mohammed, S. A., Kadhum, A. A., & Mohamad, A. B. (2016). Synthesis, inhibition effects and quantum chemical studies of a novel coumarin derivative on the corrosion of mild steel in a hydrochloric acid solution. Chemistry Central journal, 1023. https://doi.org/10.1186/s13065-016-0170-3
Al-Azawi, Khalida F, et al. "Synthesis, inhibition effects and quantum chemical studies of a novel coumarin derivative on the corrosion of mild steel in a hydrochloric acid solution." Chemistry Central journal vol. 10 (2016): 23. doi: https://doi.org/10.1186/s13065-016-0170-3
Al-Azawi KF, Al-Baghdadi SB, Mohamed AZ, Al-Amiery AA, Abed TK, Mohammed SA, Kadhum AA, Mohamad AB. Synthesis, inhibition effects and quantum chemical studies of a novel coumarin derivative on the corrosion of mild steel in a hydrochloric acid solution. Chem Cent J. 2016 Apr 27;10:23. doi: 10.1186/s13065-016-0170-3. eCollection 2016. PMID: 27134648; PMCID: PMC4850708.
Copy Download .nbib Format: NLM
Share it on

Chem Cent J. 2016 Apr 27;10:23. doi: 10.1186/s13065-016-0170-3. eCollection 2016.

Synthesis, inhibition effects and quantum chemical studies of a novel coumarin derivative on the corrosion of mild steel in a hydrochloric acid solution.

Chemistry Central journal

Khalida F Al-Azawi, Shaimaa B Al-Baghdadi, Ayad Z Mohamed, Ahmed A Al-Amiery, Talib K Abed, Salam A Mohammed, Abdul Amir H Kadhum, Abu Bakar Mohamad

Affiliations

  1. University of Technology (UOT), Baghdad, 10001 Iraq.
  2. University of Technology (UOT), Baghdad, 10001 Iraq ; Department of Chemical and Process Engineering, Universiti Kebangsaan Malaysia (UKM), 43000 Bangi, Selangor Malaysia.
  3. Faculty of Engineering, University of Nizwa, 616 Nazwa, Sultanate of Oman.
  4. Department of Chemical and Process Engineering, Universiti Kebangsaan Malaysia (UKM), 43000 Bangi, Selangor Malaysia.

PMID: 27134648 PMCID: PMC4850708 DOI: 10.1186/s13065-016-0170-3

Abstract

BACKGROUND: The acid corrosion inhibition process of mild steel in 1 M HCl by 4-[(2-amino-1, 3, 4-thiadiazol-5-yl)methoxy]coumarin (ATC), has been investigated using weight loss technique and scanning electron microscopy (SEM). ATC was synthesized, and its chemical structure was elucidated and confirmed using spectroscopic techniques (infrared and nuclear magnetic resonance spectroscopy).

FINDINGS: The results indicated that inhibition efficiencies were enhanced with an increase in concentration of inhibitor and decreased with a rise in temperature. The adsorption equilibrium constant (K) and standard free energy of adsorption (ΔGads) were calculated. Quantum chemical parameters such as highest occupied molecular orbital energy, lowest unoccupied molecular orbital energy (EHOMO and ELUMO, respectively) and dipole moment (μ) were calculated and discussed. The results showed that the corrosion inhibition efficiency increased with an increase in both the EHOMO and μ values but with a decrease in the ELUMO value.

CONCLUSIONS: Our research show that the synthesized macromolecule represents an excellent inhibitor for materials in acidic solutions. The efficiency of this macromolecule had maximum inhibition efficiency up to 96 % at 0.5 mM and diminishes with a higher temperature degree, which is revealing of chemical adsorption. An inhibitor molecule were absorbed by metal surface and follow Langmuir isotherms low and establishes an efficient macromolecule inhibitor having excellent inhibitive properties due to entity of S (sulfur) atom, N (nitrogen) atom and O (oxygen) atom.

Keywords: (thiadiazol-5-yl)methoxy)coumarin; Corrosion inhibitor; Isotherm; Weight loss

References

  1. J Med Chem. 2010 Feb 25;53(4):1519-33 - PubMed
  2. Int J Mol Sci. 2010 Jun 15;11(6):2473-98 - PubMed
  3. Drug Metab Rev. 1990;22(5):503-29 - PubMed
  4. Molecules. 2011 Aug 10;16(8):6833-43 - PubMed
  5. Bioorg Med Chem Lett. 2011 Oct 1;21(19):5770-3 - PubMed
  6. Bioinorg Chem Appl. 2012;2012:795812 - PubMed
  7. Molecules. 2012 May 14;17(5):5713-23 - PubMed
  8. Chem Cent J. 2014 Mar 27;8(1):21 - PubMed
  9. Molecules. 2014 Aug 07;19(8):11791-9 - PubMed
  10. Molecules. 2014 Dec 29;20(1):366-83 - PubMed
  11. Sci Rep. 2015 Jul 02;5:11825 - PubMed
  12. Sci Rep. 2016 Jan 22;6:19890 - PubMed
  13. Materials (Basel). 2013 Nov 27;6(12):5466-5477 - PubMed
  14. Materials (Basel). 2014 Jan 27;7(2):662-672 - PubMed
  15. Materials (Basel). 2014 Jan 28;7(2):787-804 - PubMed
  16. Materials (Basel). 2014 Jun 05;7(6):4335-4348 - PubMed
  17. Materials (Basel). 2013 Apr 02;6(4):1420-1431 - PubMed

Publication Types