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. 2021 Apr 12;11(22):13497–13512. doi: 10.1039/d1ra01405f

IR spectra of H1, H2 and H3 pure solutions and the spectra of the metal surface after inhibitor adsorption.

Comp. Solution beaks & frequencies (cm−1) Frequencies refer to Shifting and missing of beaks & frequencies (cm−1) after adsorption
H1 3359 OH, N–H stretching Missed
2974, 2928 and 2883 (CH3) and (C–H) extending 2961, 2923, 2851
1664 (C Created by potrace 1.16, written by Peter Selinger 2001-2019 O) attached to NH 1720
1047 (C–O) stretch 1171
1388 (C–H) Missed
880 ( Created by potrace 1.16, written by Peter Selinger 2001-2019 CH2 Created by potrace 1.16, written by Peter Selinger 2001-2019 C–H) Missed
H2 3375 OH, N–H stretching Missed
2974, 2928 and 2882 (CH3) and (C–H) extending (3036, 2965, 2876)
1665 (C Created by potrace 1.16, written by Peter Selinger 2001-2019 O) attached to NH 1720
1047 (C–O) stretch 1169
1388 (C–H) Missed
881 ( Created by potrace 1.16, written by Peter Selinger 2001-2019 CH2 Created by potrace 1.16, written by Peter Selinger 2001-2019 C–H) Missed
H3 3382 OH, N–H stretching Missed
(2974, 2929 and 2883) (CH3) and (C–H) extending Reduced to one beak at 2968
1663 (C Created by potrace 1.16, written by Peter Selinger 2001-2019 O) attached to NH 1720
1047 (C–O) stretch 1169
1389 (C–H) holding Missed
881 ( Created by potrace 1.16, written by Peter Selinger 2001-2019 CH2 Created by potrace 1.16, written by Peter Selinger 2001-2019 C–H) Missed