Allow me to add one point. According to wiki, ferrate(VI) refers either to the anion [FeO4]2−, in which iron is in the +6 oxidation state, or to a salt containing this anion.(which shall be called 铁酸)。 So potassium ferricyanide shall be 铁氰化钾, while Potassium hexacyanoferrate cannot be treated as 铁氰化钾 but 六氰合铁酸钾 based on the naming rules (hexa for six, cyano-for cyanide, and ferrate for 铁酸)