Comparison of spectrum constants of low excited electronic states of the same main group ions of SeBr+.
| Λ–S states | Monovalent molecules | T e/cm−1 | R e/Å | ω e/cm−1 | B e/cm−1 | ω e χ e/cm−1 |
|---|---|---|---|---|---|---|
| X 3Σ− | SCl+22 | 0 | 1.8779 | 686.1 | 0.2839 | 3.12 |
| SeCl+23 | 0 | 2.0351 | 520.8 | 0.1686 | 1.9586 | |
| TeCl+24 | 0 | 2.2287 | 448.9 | 0.1237 | 1.5727 | |
| SeBr+ | 0 | 2.1802 | 378.5 | 0.0905 | 1.0977 | |
| 11Δ | SCl+22 | 6334 | 1.8763 | 691.0 | 0.2844 | 2.89 |
| SeCl+23 | 6415 | 2.0310 | 527.7 | 0.1693 | 1.8346 | |
| TeCl+24 | 6183 | 2.2244 | 455.0 | 0.1241 | 1.4745 | |
| SeBr+ | 5733 | 2.1776 | 381.7 | 0.0907 | 1.0549 | |
| 11Σ+ | SCl+22 | 11 171 | 1.8818 | 675.1 | 0.2828 | 3.22 |
| SeCl+23 | 11 755 | 2.0374 | 513.3 | 0.1682 | 2.1417 | |
| TeCl+24 | 11 787 | 2.2289 | 446.6 | 0.1236 | 1.6931 | |
| SeBr+ | 10 343 | 2.1890 | 366.1 | 0.0897 | 1.2493 |