Table 1. Peak values from UV–Vis spectra measured for different DtpA species both in solution and in the crystalline form.
Crystal measurements were collected at 100 K and solution data at 293 K.
| Soret band (nm) | β and α bands (nm) | CT band (nm) | Reference | |
|---|---|---|---|---|
| Ferric (solution) | 406 | 502 | 635 | Petrus et al. (2016 ▸) |
| Ferric (crystal) | 404 | 532, 560 | 624 | This work |
| Oxyferrous complex (solution) | 420 | 539, 571 | 635 | Petrus et al. (2016 ▸) |
| Oxyferrous complex (crystal) | 416 | 526, 557 | 627 | This work |
| Compound II (solution) | 419 | 528, 557 | 621 | Petrus et al. (2016 ▸) |
| Compound III (solution) | 416 | 541, 577 | — | Petrus et al. (2016 ▸) |
| Putative compound III (H2O2-treated crystal) | 415 | 535, 574 | — | This work |
| Putative deoxyferrous form (X-ray-irradiated crystal) | 420 | 525, 556 | 624 | This work |