Structural studies of Prussian Blue Analogs containing trivalent hexacyanoferrate by extended X-ray absorption fine structure spectroscopy

The structure of 10 Prussian Blue Analogs containing trivalent hexacyanoferrate was investigated by extended X-ray absorption fine structure spectroscopy at the Fe 1 s edge and the transition metal 1 s edges. Despite the changes in physical properties due to differences in the non-iron transition metal and the interatomic distance between Fe and the non-iron transition metal, there was almost no change in the structure of trivalent hexacyanoferrate ions. Although this result agrees with the conclusions of many previous structural analyses, it raises a new question compared to our previous research conducted soft X-ray absorption measurements at the Fe 2p edge, which states that the detailed electronic state of Fe varies in proportion to the interatomic distance between Fe and the non-iron transition metal.