Na6 Fe2 P2 C2 O14

Na₆Fe₂P₂C₂O₁₄ is a mixed-metal phosphate-carbonate compound belonging to the family of polyanion-framework semiconductors, combining sodium, iron, phosphate, and carbonate functional groups in a structured lattice. This material family is primarily of research interest for energy storage applications, particularly as a potential cathode or electrode material in sodium-ion batteries and related electrochemical devices, where the iron redox activity and polyanion framework offer structural stability and tunable electrochemical properties. The compound's semiconductor classification suggests it could support charge transport in solid-state electrochemical systems, though as a relatively complex synthetic phase it remains largely in the exploratory research stage rather than established industrial production.