Table 3.
Mode Number | Symmetry Assignment | Wavenumbers cm−1 |
Covalent-Bond Attribution |
---|---|---|---|
1 | a 1g | 993 | Breathing |
2 | 3073 | C–H stretching in phase | |
3 | a 2g | 1350 | C–H in-plane in-phase bending |
4 | b 2g | 707 | C–C–C puckering |
5 | 990 | C–H out-of-plane trigonal bending | |
6 | e 2g | 606 | C–C–C in-plane bending |
7 | 3056 | C–H stretching | |
8 | 1599 | C–C stretching | |
9 | 1178 | C–H in-plane bending | |
10 | e 1g | 846 | C–H out-of-plane C6 libration |
11 | a 2u | 673 | C–H out-of-plane in-phase bending |
12 | b 1u | 1010 | C–C–C trigonal bending |
13 | 3057 | C–H trigonal bending | |
14 | b 2u | 1309 | C–C stretching (Kekulé) |
15 | 1146 | C–H in-plane trigonal bending | |
16 | e 2u | 404 | C–C–C out-of-plane bending |
17 | 967 | C–H out-of-plane bending | |
18 | e 1u | 1037 | C–H in-plane bending |
19 | 1482 | C–C stretching | |
20a | 3064 | C–H stretching |