FT-IR frequency (cm−1) | FT-Raman frequency (cm−1) | Assignment | ||
---|---|---|---|---|
2A3MP | 2A4MP | 2A3MP | 2A4MP | |
3470 | 3431 | 3468 | 3430 | NH2 asym. stretch |
3335 | 3300 | 3338 | 3305 | NH2 sym. stretch |
3068 | 3096 | 3067 | 3095 | CH asym. stretch |
– | – | 3033 | 3060 | CH stretch |
3024 | 3055 | 3019 | 3041 | CH stretch |
2974 | 2980 | 2980 | 2980 | CH3 asym. stretch |
2935 | 2919 | 2925 | 2955 | CH3 asym. stretch |
2858 | – | 2864 | 2900 | CH3 sym. stretch |
1623 | 1646 | 1618 | 1646 | NH2 scissoring |
1449 | 1453 | – | – | CH3 asym. scissoring |
1384 | 1374 | 1379 | 1370 | CH3 sym. scissoring |
1282 | 1268 | 1264 | 1270 | C=N stretch |
1250 | 1248 | 1195 | 1246 | CH in- plane bending |
1196 | 1177 | 1188 | 1177 | C–CH3 stretch |
1135 | 1130 | 1137 | 1130 | CH in- plane-bending |
1080 | 1040 | 1068 | 1038 | CH in- plane-bending |
1035 | 1035 | 1031 | 1033 | CH3 rocking |
– | – | 855 | 830 | CH out-of-plane |
774 | 788 | 762 | 786 | CH out-of-plane |
– | – | 750 | 750 | CH out-of-plane |
524 | 455 | 525 | 455 | NH2 wagging |
– |  | 288 |  | C–CH3 in-plane-bending |
– |  | 251 |  | C–CH3 out-of-plane |