Figure 2
The isomorphous and anomalous differences {χ2 ≃ [ΔI/σ(I)]2} from the three derivatives. The NaI (purple) and CsCl (green) derivatives both have a large solvent contribution at very low resolution. At the Cu Kα wavelength the anomalous Fe signal (red) is smaller than either of the isomorphous differences. The NaI data were limited to 2.8 Å resolution by the detector geometry. The χ2 values were calculated in SCALEPACK using 30 bins from 30 to 2.6 Å. |