Table 1. Peak Positions and Displacements between Ground- and Excited-State PESs Extracted by Fitting the ISRS Raman Excitation Profiles Reported with the Corresponding 90% Confidence Intervalsa.
| ν̃g′g (cm–1) |
(DFT) |
(experimental) |
Q (au) |
|---|---|---|---|
| 345 (2) | 0.27 | 0.18 (0.03) | 0.063 |
| 470 (2) | 0.24 | 0.21 (0.04) | 0.059 |
| 493 (2) | 0.13 | 0.15 (0.03) | 0.040 |
| 526 (2) | 0.18 | 0.26 (0.03) | 0.071 |
| 592 (2) | 0.60 | 0.63 (0.04) | 0.13 |
| 675 (2) | 0.19 | 0.19 (0.03) | 0.044 |
| 752 (2) | 0.11 | 0.17 (0.03) | 0.039 |
| 833 (2) | 0.17 | 0.17 (0.03) | 0.041 |
The results are compared with the displacements obtained by TD-DFT calculations performed with CAM-B3LYP functional and the 6-311++G(2d,2p) basis set. In the last column the extracted detected displacements are reported in atomic units.

