“…A strong C=O stretching band due to the ester group is observed at 1736 cm -1 while a strong peak emerged at 1248 cm -1 can be ascribed to the stretching of C-O ether group. The medium intensity band at 1601 cm -1 suggests the presence of the C=N of imine group [1][2]. Abbreviations: s, strong; m, medium Figure 1.…”
“…A strong C=O stretching band due to the ester group is observed at 1736 cm -1 while a strong peak emerged at 1248 cm -1 can be ascribed to the stretching of C-O ether group. The medium intensity band at 1601 cm -1 suggests the presence of the C=N of imine group [1][2]. Abbreviations: s, strong; m, medium Figure 1.…”
“…The occurrence of another band with medium intensity which can be assigned to the imine group was detected at 1606 cm -1 . [2][3] The fluoro substituent was observed as a strong band at 1187 cm -1 .…”
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