Table 2 Absorption bands and assignments of CN
K-K transformation spectrum (cm−1) | Δν (cm−1) | Assignments | |
|---|---|---|---|
1713 | 1720 | 7 | C═O stretching |
1647 | 1650 | 3 | NO2 stretching |
1373 | 1378 | 5 | CH deformation |
1279 | 1280 | 1 | NO2 stretching |
1120 | 1117 | 3 | C─O stretching |
1063 | 1061 | 2 | C─O stretching |
998 | 1001 | 3 | C─O stretching |
914 | 917 | 3 | CH out-of-plane |
840 | 840 | 0 | N─O stretching |
745 | 747 | 2 | NO2 wagging |
699 | 692 | 7 | NO2 scissoring |
