The NRL spectrum was district the principal peak at 3036 cm-1 (=CH stretching), 2853-2961 cm-1 (C-H stretching), 1663 cm-1 (C=C stretching), 1376-1449 cm-1 (C-H bending) and 835 cm-1 (C=CH wagging) [1,9].
The NRLspectrum was district the principal peak at 3036 cm-1 (=CH stretching), 2853-2961 cm-1 (C-H stretching),1663 cm-1 (C=C stretching), 1376-1449 cm-1 (C-H bending) and 835 cm-1 (C=CH wagging) [1,9].