Citation: Larrea, Edurne S.; Mesa, Jos\'e Luis; Legarra, Estibaliz; Aguayo, Andr\'es Tom\'as; Arriortua, Maria Isabel (2016). Crystal structure of K~0.75~[Fe^II^~3.75~Fe^III^~1.25~(HPO~3~)~6~]·0.5H~2~O, an open-framework iron phosphite with mixed-valent Fe^II^/Fe^III^ ions. Acta Crystallographica Section E, 72, pp. 63-65.
Formula: Fe5 H7 K0.75 O18.5 P6
Chemical name:Potassium hexaphosphitopentaferrate(II,III) hemihydrate