The Structure Investigation of Copper, Nickel and Iron Hexacyanometalates from Conventional X-Ray Powder Diffraction Data

摘要

The crystal structure of new Prussian blue analogue samples, KCu[Fe{sub}(1-x)Co{sub}x(CN){sub}6], KNi[Fe{sub}(1-x)Co{sub}x(CN){sub}6] and Fe[Fe{sub}(1-x)Co{sub}x(CN){sub}6], was solved on the base of the model from Keggin and Miles [1] and refined by the Rietveld method [2] from conventional X-ray powder diffraction data. These compounds form mixed crystals for all Fe/Co ratios. The crystal structure of the KCu[Fe{sub}0.3Co{sub}0.7(CN){sub}6], KNi[Fe{sub}0.3Co{sub}0.7(CN){sub}6] and Fe[Fe{sub}0.8Co{sub}0.2(CN){sub}6] is presented in detail. For both potassium containing compounds the disorder in the potassium arrangement is the most obvious characteristic.