| Wave length (nm) | Wave number (cm−1) | Transitions from 6A1g(S) | |
| Observed | Calculated | ||
| 813 | 12,300 | ||
| 782 | 12,790 | 12,796 | 4T1g(G) |
| 730 | 13,700 | ||
| 542 | 18,450 | 16,529 | 4T2g(G) |
| 500 | 20,000 | 20,050 | 4Eg(G) |
| 318 | 31,745 | 31,430 | 4A1g(G) |
| 271 | 36,900 | 36,332 | 4T2g(F) |