Fig. 6
From: Effects of metal cation substitution on hexavalent chromium reduction by green rust
Calculated pair distribution functions [G(r)] for each measured reaction product, normalized to the intensity of the correlation at 1.98 Å. A Cr (III) hydroxide PDF pattern is not available, but has known correlations at 1.98 and 3.0 Å (Tang et al. [57]). Fe–O and Fe–Fe distances referenced in the text are labelled. RES and RCS correspond to edge-sharing and corner-sharing Fe-Fe distances, respectively