Experimental and Theoretical Studies on Acid Corrosion Inhibition of API 5L X70 Steel with Novel 1-<i>N</i>-α-<span style="font-variant: small-caps">d</span>-Glucopyranosyl-1<i>H</i>-1,2,3-Triazole Xanthines
Alma Sánchez-Eleuterio,
Carlos Mendoza-Merlos,
Ricardo Corona Sánchez,
Alejandra M. Navarrete-López,
Anatolio Martínez Jiménez,
Elsie Ramírez-Domínguez,
Leticia Lomas Romero,
Ricardo Orozco Cruz,
Araceli Espinoza Vázquez,
Guillermo E. Negrón-Silva
Affiliations
Alma Sánchez-Eleuterio
Departamento de Ciencias Básicas, Universidad Autónoma Metropolitana, Av. San Pablo No. 180, Azcapotzalco, Ciudad de Mexico 02200, Mexico
Carlos Mendoza-Merlos
Departamento de Ciencias Básicas, Universidad Autónoma Metropolitana, Av. San Pablo No. 180, Azcapotzalco, Ciudad de Mexico 02200, Mexico
Ricardo Corona Sánchez
Departamento de Química, Universidad Autónoma Metropolitana, Av. San Rafael Atlixco No. 186, Ciudad de Mexico 09340, Mexico
Alejandra M. Navarrete-López
Departamento de Ciencias Básicas, Universidad Autónoma Metropolitana, Av. San Pablo No. 180, Azcapotzalco, Ciudad de Mexico 02200, Mexico
Anatolio Martínez Jiménez
Departamento de Ciencias Básicas, Universidad Autónoma Metropolitana, Av. San Pablo No. 180, Azcapotzalco, Ciudad de Mexico 02200, Mexico
Elsie Ramírez-Domínguez
Departamento de Ciencias Básicas, Universidad Autónoma Metropolitana, Av. San Pablo No. 180, Azcapotzalco, Ciudad de Mexico 02200, Mexico
Leticia Lomas Romero
Departamento de Química, Universidad Autónoma Metropolitana, Av. San Rafael Atlixco No. 186, Ciudad de Mexico 09340, Mexico
Ricardo Orozco Cruz
Instituto de Ingeniería, Universidad Veracruzana, Av. S. S. Juan Pablo II S/N, Boca del Río, Veracruz 94294, Mexico
Araceli Espinoza Vázquez
Instituto de Ingeniería, Universidad Veracruzana, Av. S. S. Juan Pablo II S/N, Boca del Río, Veracruz 94294, Mexico
Guillermo E. Negrón-Silva
Departamento de Ciencias Básicas, Universidad Autónoma Metropolitana, Av. San Pablo No. 180, Azcapotzalco, Ciudad de Mexico 02200, Mexico
A series of novel 1-N-α-d-glucopyranosyl-1H-1,2,3-triazole xanthines was synthesized from azido sugars (glucose, galactose, and lactose) and propargyl xanthines (theophylline and theobromine) using a typical copper (I)-catalyzed azide–alkyne 1,3-dipolar cycloaddition. The corrosion inhibition activities of these new carbohydrate-xanthine compounds were evaluated by studying the corrosion of API 5 L X70 steel in a 1 M HCl medium. The results showed that, at 10 ppm, a 90% inhibition efficiency was reached by electrochemical impedance spectroscopy. The inhibitory efficiency of these molecules is explained by means of quantum chemical calculations of the protonated species with the solvent effect, which seems to better represent the actual situation of the experimental conditions. Some quantum chemical parameters were analyzed to characterize the inhibition performance of the tested molecules.