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Spin quantum numbers, numbers of spin multiplets, spin state energies, and relative energies for all-ferrous cluster with six equal exchange-coupling constants between the four irons
| S | # multiplets | E°(S)/J° | [E°(S) − E°(0)]/J° |
|---|---|---|---|
| 0 | 5 | −12 | 0 |
| 1 | 12 | −11 | 1 |
| 2 | 16 | −9 | 3 |
| 3 | 17 | −6 | 6 |
| 4 | 15 | −2 | 10 |
| 5 | 10 | 3 | 15 |
| 6 | 6 | 9 | 21 |
| 7 | 3 | 16 | 28 |
| 8 | 1 | 24 | 36 |
