Synthesis of New Azo Compounds Based on Tröger's Base Contain Thiadiazole Amine and Study Anti-Corrosive Activity

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Ghanem Obaid Athraa; Abdul Hussain Karim Sadiq; Abd Alrazzak Abd Allatif Nour

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Journal Paper

Paper Information

Journal: ADVANCED JOURNAL OF CHEMISTRY, SECTION A Year:2024 | Volume:7 | Issue:6 Page(s): 853-867

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Title

Synthesis of New Azo Compounds Based on Tröger's Base Contain Thiadiazole Amine and Study Anti-Corrosive Activity

Author(s)

Ghanem Obaid Athraa | Abdul Hussain Karim Sadiq | Abd Alrazzak Abd Allatif Nour | Issue Writer Certificate

Keywords

Tröger' s base

Azo dye

Thiadiazole amine

Diazonium salt

anti-corrosion

Abstract

A new series of azo compounds derived from Tröger's base containing the thiadiazole amine were synthesized. The thadiazole amine was synthesized from [methanodibenzo 6H,12H-5,11- [b, f] [1,5] diazocine-2,8-dicarboxylic acid] and thiosemicarbazide in only two steps. The diazonium salt was derived from the thiadiazole amine, and then coupled with of different phenol compounds (β-naphthol, hydroquinone, catechol, resorcinol, and α-naphthol) to form the azo compounds. The azo compounds were confirmed structure by a range of techniques, including solubility testing, melting point, FT-IR spectroscopy, nuclear magnetic resonance spectroscopy, and mass spectrometry. The weight loss method was followed to study the anti-corrosion activity of the compounds prepared on carbon steel from hydrochloric acid in a solution (0.5 M). Immersion times were also evaluated at a constant temperature of 298 K at two inhibitory concentrations (0.003 M and 0.005 M). The results obtained in weight measurements and evaluation of the effectiveness of azo compounds for carbon corrosion will be used in acidic environments. New results were obtained with differences in the inhibition efficiency between the compounds. In addition, an inhibition efficiency of (91%) and a lower corrosion rate (0.737) was obtained for compound A4, and compound A5 showed the lowest inhibition efficiency (78%) and the highest corrosion rate (1.695). Since the compounds manufactured in this way has good results, further analysis of the remaining compounds is needed, and their inhibitory efficiency is measured.

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